Add minimal CI integration (#111)

* Add a minimal CI setup and pass CI tests
* Drop outdated amulet tests
* Disable coverage checks

.github/CODEOWNERS

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+# This file is centrally managed as a template file in https://github.com/canonical/solutions-engineering-automation
+# To update the file:
+# - Edit it in the canonical/solutions-engineering-automation repository.
+# - Open a PR with the changes.
+# - When the PR merges, the soleng-terraform bot will open a PR to the target repositories with the changes.
+#
+# These owners will be the default owners for everything in the repo. Unless a
+# later match takes precedence, @canonical/soleng-reviewers will be requested for
+# review when someone opens a pull request.
+*    @canonical/soleng-reviewers

.github/workflows/check.yaml

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+name: Check workflow running linter, unit and functional tests
+
+on:
+  workflow_call:
+  workflow_dispatch:
+  pull_request:
+    types: [ opened, synchronize, reopened ]
+    branches: [ master, main ]
+    paths-ignore:
+      - '**.md'
+      - '**.rst'
+
+concurrency:
+      # We do not want to run multiple jobs for single PR.
+      group: ${{ github.workflow }}-${{ github.head_ref || github.ref }}
+      cancel-in-progress: true
+
+jobs:
+  lint-unit:
+    name: Lint checkers and Unit tests
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v4
+      with:
+        submodules: true
+    - name: Set up Python 3.10
+      uses: actions/setup-python@v5
+      with:
+        python-version: '3.10'
+    - name: Install dependencies
+      run: |
+        python -m pip install --upgrade pip
+        python -m pip install tox
+    - name: Run lint checkers
+      run: tox -e lint
+    - name: Run unit tests
+      run: tox -e unit

.github/workflows/promote.yaml

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+name: Promote charm to other tracks and channels
+
+on:
+  workflow_dispatch:
+    inputs:
+      destination-channel:
+        description: 'Destination Channel, e.g. latest/candidate'
+        required: true
+      origin-channel:
+        description: 'Origin Channel, e.g. latest/edge'
+        required: true
+
+jobs:
+  promote-charm:
+    name: Promote charm
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - name: Release charm to channel
+        uses: canonical/charming-actions/[email protected]
+        with:
+          credentials: ${{ secrets.CHARMHUB_TOKEN }}
+          github-token: ${{ secrets.GITHUB_TOKEN }}
+          destination-channel: ${{ github.event.inputs.destination-channel }}
+          origin-channel: ${{ github.event.inputs.origin-channel }}

.github/workflows/release.yaml

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+name: Release to Edge
+
+on:
+  push:
+    branches: [ main ]
+  release:
+    types: [ published ]
+
+jobs:
+  check:
+    uses: ./.github/workflows/check.yaml
+    secrets: inherit
+
+  release:
+    needs: check
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+      - name: Initialize lxd  # This should dropped once it's implemented on charming-actions itself. https://github.com/canonical/charming-actions/issues/140
+        uses: canonical/[email protected]
+      - name: Upload charm to charmhub
+        uses: canonical/charming-actions/[email protected]
+        with:
+          credentials: "${{ secrets.CHARMHUB_TOKEN }}"
+          github-token: "${{ secrets.GITHUB_TOKEN }}"
+          channel: "latest/edge"
+          # Note(rgildein): Right now we are not using destructive-mode, since our charmcraft.yaml is designed with a single build-on and the ability to run-on multiple bases. Running with destructive-mode would require aligning the base defined in this job with the one defined in charmcraft.yaml (build-on).
+          destructive-mode: false

.gitignore

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+# This is a template `.gitignore` file for ops charms
+# This file is managed by bootstack-charms-spec and should not be modified
+# within individual charm repos. https://launchpad.net/bootstack-charms-spec
+
+# Juju files
+.unit-state.db
+
+# Byte-compiled / optimized / DLL files
+__pycache__/
+*.py[cod]
+*$py.class
+
+# Tests files and dir
+.pytest_cache/
+.coverage
+.tox
+.venv
+reports/
+**/report/
+htmlcov/
+.mypy_cache
+
+# Log files
+*.log
+
+# IDEs
+.idea/
+.vscode/
+
+# vi
+.*.swp
+
+# version data
+repo-info
+version
+
+# Python builds
+deb_dist/
+dist/
+*.egg-info/
+
+# Snaps
+*.snap
+
+# Builds
+.build/
+build/
+*.charm

pyproject.toml

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+[tool.flake8]
+ignore = ["C901", "D100", "D101", "D102", "D103", "W503", "W504"]
+exclude = ['.eggs', '.git', '.tox', '.venv', '.build', 'build', 'report', 'docs']
+max-line-length = 99
+max-complexity = 10
+extend-ignore = ["E203", "E704"]
+
+[tool.black]
+line-length = 99
+exclude = '''
+/(
+    | .eggs
+    | .git
+    | .tox
+    | .venv
+    | .build
+    | build
+    | report
+    | docs
+)/
+'''
+
+[tool.isort]
+profile = "black"
+skip_glob = [
+    ".eggs",
+    ".git",
+    ".tox",
+    ".venv",
+    ".build",
+    "build",
+    "report",
+    "docs"
+]
+
+[tool.pylint]
+max-line-length = 99
+load-plugins = "pylint.extensions.docparams"
+ignore-paths = [
+    ".eggs",
+    ".git",
+    ".tox",
+    ".venv",
+    ".build",
+    "build",
+    "report",
+    "tests",
+    "docs"
+]
+no-docstring-rgx = "__.*__"
+default-docstring-type = "sphinx"
+accept-no-param-doc = false
+accept-no-raise-doc = false
+accept-no-return-doc = false
+accept-no-yields-doc = false
+disable = [
+    "import-error",
+    "consider-using-f-string",
+    "missing-type-doc",
+]
+
+[tool.mypy]
+warn_unused_ignores = true
+warn_unused_configs = true
+warn_unreachable = true
+disallow_untyped_defs = false
+ignore_missing_imports = true
+exclude = [
+    ".eggs",
+    ".git",
+    ".tox",
+    ".venv",
+    ".build",
+    "build",
+    "lib",
+    "report",
+    "tests",
+    "docs"
+]
+
+[tool.codespell]
+skip = ".eggs,.tox,.git,.venv,venv,build,.build,lib,report,docs"
+quiet-level = 3
+check-filenames = true
+ignore-words-list = "assertIn"
+
+[tool.pytest.ini_options]
+filterwarnings = [
+    "ignore::RuntimeWarning",
+]