Response status in telemetry

[kwapik]

Description of change

This introduces aperture.response_status column in telemetry. It mirrors the implementation of response_status label for metrics.
This also extends above logic to include 1xx, 2xx, and 3xx codes as OK instead of only 2xx codes.

Besides this, some cleanup is done:

1. Above logic is moved from FluxMeter to OTEL package. This changes FluxMeter interface!
2. A log of logic is moved from metricsprocessor to metricsprocessor/internal for better visibility and easier separation of functions which are called directly in metricsprocessor and helpers,
3. The above made creating UT much easier, so this PR also includes some.

Ref: https://github.com/fluxninja/cloud/issues/6788

Checklist

• Tested in playground or other setup
• Tests and/or benchmarks are included
• Breaking changes

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This change is 

[codecov]

Codecov Report

Base: 37.17% // Head: 37.46% // Increases project coverage by +0.29% 🎉

Coverage data is based on head (92889fa) compared to base (d31448c).
Patch coverage: 95.53% of modified lines in pull request are covered.

❗ Current head 92889fa differs from pull request most recent head 4a06a52. Consider uploading reports for the commit 4a06a52 to get more accurate results

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #828      +/-   ##
==========================================
+ Coverage   37.17%   37.46%   +0.29%     
==========================================
  Files         273      278       +5     
  Lines       20470    20489      +19     
==========================================
+ Hits         7610     7677      +67     
+ Misses      12374    12332      -42     
+ Partials      486      480       -6     

Impacted Files	Coverage Δ
pkg/policies/dataplane/iface/flux-meter.go	100.00% <ø> (ø)
...licies/dataplane/resources/fluxmeter/flux-meter.go	0.00% <0.00%> (ø)
pkg/otelcollector/metricsprocessor/processor.go	64.91% <88.88%> (-7.25%)	⬇️
...lcollector/metricsprocessor/internal/sdk_labels.go	89.47% <89.47%> (ø)
...metricsprocessor/internal/check_response_labels.go	96.96% <96.96%> (ø)
...ollector/metricsprocessor/internal/envoy_labels.go	100.00% <100.00%> (ø)
...llector/metricsprocessor/internal/labels_filter.go	100.00% <100.00%> (ø)
.../otelcollector/metricsprocessor/internal/status.go	100.00% <100.00%> (ø)
pkg/policies/mocks/mock_flux_meter.go	71.73% <100.00%> (ø)
pkg/jobs/job.go	82.94% <0.00%> (+2.32%)	⬆️

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