Added artexplainer rock and tests

[BON4]

Description

---

• Add rockcraft.yaml
• Add tests
• Add tox.ini

This is re-open request for #92 .

Logs from tests

juju status after all tests are passed:

Model     Controller          Cloud/Region        Version  SLA          Timestamp
kubeflow  microk8s-localhost  microk8s/localhost  3.6.1    unsupported  09:54:41+02:00

App                      Version                Status   Scale  Charm                    Channel          Rev  Address         Exposed  Message
grafana-agent-k8s        0.40.4                 blocked      1  grafana-agent-k8s        latest/stable     80  10.152.183.195  no       Missing ['grafana-cloud-config']|['logging-consumer'] for logging-provider; ['grafana-cloud-config']|['send-remote-wr...
istio-ingressgateway                            active       1  istio-gateway            1.16/stable     1005  10.152.183.88   no       
istio-pilot                                     active       1  istio-pilot              1.16/stable      662  10.152.183.138  no       
knative-operator                                active       1  knative-operator         latest/edge      542  10.152.183.55   no       
knative-serving                                 active       1  knative-serving          latest/edge      572  10.152.183.61   no       
kserve-controller                               blocked      1  kserve-controller                           0  10.152.183.92   no       Cannot parse a config-defined images list from config '{' - thisconfig input will be ignored.
metacontroller-operator                         active       1  metacontroller-operator  latest/edge      401  10.152.183.56   no       
minio                    res:oci-image@1755999  active       1  minio                    ckf-1.7/stable   214  10.152.183.225  no       
resource-dispatcher                             active       1  resource-dispatcher      latest/edge      236  10.152.183.90   no       

Unit                        Workload  Agent  Address       Ports          Message
grafana-agent-k8s/0*        blocked   idle   10.1.142.145                 Missing ['grafana-cloud-config']|['logging-consumer'] for logging-provider; ['grafana-cloud-config']|['send-remote-wr...
istio-ingressgateway/0*     active    idle   10.1.142.186                 
istio-pilot/0*              active    idle   10.1.142.174                 
knative-operator/0*         active    idle   10.1.142.189                 
knative-serving/0*          active    idle   10.1.142.136                 
kserve-controller/0*        blocked   idle   10.1.142.179                 Cannot parse a config-defined images list from config '{' - thisconfig input will be ignored.
metacontroller-operator/0*  active    idle   10.1.142.134                 
minio/0*                    active    idle   10.1.142.178  9000-9001/TCP  
resource-dispatcher/0*      active    idle   10.1.142.139                 

Logs of passed integration tests tox -vve integration -- --model kubeflow --keep-models (only last included due to PR message maximum length):

---------------------------------------------------------------------------------------------- live log teardown -----------------------------------------------------------------------------------------------
INFO     pytest_operator.plugin:plugin.py:903 Model status:

Model     Controller          Cloud/Region        Version  SLA          Timestamp
kubeflow  microk8s-localhost  microk8s/localhost  3.6.1    unsupported  09:45:54+02:00

App                      Version                Status   Scale  Charm                    Channel          Rev  Address         Exposed  Message
grafana-agent-k8s        0.40.4                 blocked      1  grafana-agent-k8s        latest/stable     80  10.152.183.195  no       Missing ['grafana-cloud-config']|['logging-consumer'] for logging-provider; ['grafana-cloud-config']|['send-remote-wr...
istio-ingressgateway                            active       1  istio-gateway            1.16/stable     1005  10.152.183.88   no       
istio-pilot                                     active       1  istio-pilot              1.16/stable      662  10.152.183.138  no       
knative-operator                                active       1  knative-operator         latest/edge      542  10.152.183.55   no       
knative-serving                                 active       1  knative-serving          latest/edge      572  10.152.183.61   no       
kserve-controller                               blocked      1  kserve-controller                           0  10.152.183.92   no       Cannot parse a config-defined images list from config '{' - thisconfig input will be ignored.
metacontroller-operator                         active       1  metacontroller-operator  latest/edge      401  10.152.183.56   no       
minio                    res:oci-image@1755999  active       1  minio                    ckf-1.7/stable   214  10.152.183.225  no       
resource-dispatcher                             active       1  resource-dispatcher      latest/edge      236  10.152.183.90   no       

Unit                        Workload  Agent  Address       Ports          Message
grafana-agent-k8s/0*        blocked   idle   10.1.142.145                 Missing ['grafana-cloud-config']|['logging-consumer'] for logging-provider; ['grafana-cloud-config']|['send-remote-wr...
istio-ingressgateway/0*     active    idle   10.1.142.186                 
istio-pilot/0*              active    idle   10.1.142.174                 
knative-operator/0*         active    idle   10.1.142.189                 
knative-serving/0*          active    idle   10.1.142.136                 
kserve-controller/0*        blocked   idle   10.1.142.179                 Cannot parse a config-defined images list from config '{' - thisconfig input will be ignored.
metacontroller-operator/0*  active    idle   10.1.142.134                 
minio/0*                    active    idle   10.1.142.178  9000-9001/TCP  
resource-dispatcher/0*      active    idle   10.1.142.139                 

INFO     pytest_operator.plugin:plugin.py:909 Juju error logs:

unit-kserve-controller-0: 09:28:31 ERROR unit.kserve-controller/0.juju-log Failed to handle <InstallEvent via KServeControllerCharm/on/install[1]> with error: Please relate to istio-pilot:gateway-info
unit-kserve-controller-0: 09:40:44 ERROR unit.kserve-controller/0.juju-log object-storage:6: Failed to handle <RelationChangedEvent via KServeControllerCharm/on/object_storage_relation_changed[151]> with error: Waiting for object-storage relation data
unit-kserve-controller-0: 09:45:37 ERROR unit.kserve-controller/0.juju-log Failed to handle <ConfigChangedEvent via KServeControllerCharm/on/config_changed[206]> with error: Cannot parse a config-defined images list from config '{' - thisconfig input will be ignored.

INFO     pytest_operator.plugin:plugin.py:991 Forgetting model main...
INFO     httpx:_client.py:1038 HTTP Request: DELETE https://127.0.0.1:16443/api/v1/namespaces/test-namespace-resource-dispatcher "HTTP/1.1 200 OK"


======================================================================================= 18 passed in 1284.53s (0:21:24) ========================================================================================
integration: 1305623 I exit 0 (1285.63 seconds) /home/yurchenko/kserve-operators/charms/kserve-controller> pytest -v --tb native --ignore=/home/yurchenko/kserve-operators/charms/kserve-controller/tests/unit --log-cli-level=INFO -s --model kubeflow --keep-models pid=2919676 [tox/execute/api.py:286]
  integration: OK (1305.43=setup[19.80]+cmd[1285.63] seconds)
  congratulations :) (1305.50 seconds)

[DnPlas]

Thanks @BON4 !

The tests are not passing due to a residue from an old pattern, other than that lgtm.
I tested this PR by:

1. Building the rock -> passed
2. Looking for the required files -> passed

[DnPlas]

Thanks @BON4 !

I did a last build and check on the binary file, and it works:

docker run --rm -ti --entrypoint /bin/bash artexp:0.1
_daemon_@99347261a6e3:/$ python -m artserver
/usr/local/lib/python3.10/dist-packages/art/estimators/certification/__init__.py:30: UserWarning: PyTorch not found. Not importing DeepZ or Interval Bound Propagation functionality
  warnings.warn("PyTorch not found. Not importing DeepZ or Interval Bound Propagation functionality")
2025-01-10 13:42:56.341 8 kserve INFO [model_server.py:register_model():384] Registering model: model
2025-01-10 13:42:56.341 8 kserve INFO [model_server.py:start():254] Setting max asyncio worker threads as 12
2025-01-10 13:42:56.342 8 kserve INFO [model_server.py:serve():260] Starting uvicorn with 1 workers
2025-01-10 13:42:56.475 uvicorn.error INFO:     Started server process [8]
2025-01-10 13:42:56.475 uvicorn.error INFO:     Waiting for application startup.
2025-01-10 13:42:56.513 8 kserve INFO [server.py:start():63] Starting gRPC server on [::]:8081
2025-01-10 13:42:56.514 uvicorn.error INFO:     Application startup complete.
2025-01-10 13:42:56.515 uvicorn.error INFO:     Uvicorn running on http://0.0.0.0:8080 (Press CTRL+C to quit)