Collect SnippetsFilter information

[bjee19]

Proposed changes

Collect SnippetsFilters count, the directive-context of each snippet, and the total count of each unique directive-context.

Problem: I want to know if SnippetsFilters are being used, and what are the most popular directives being used.

Solution: Collect SnippetsFilter count, the directive-context of each snippet, and the total count of each unique directive-context.

Testing: Manual testing and unit tests.

Output with the example SnippetsFilters.yaml deployed. (removed other telemetry points for easier reading)

{"level":"debug","ts":"2024-10-14T19:10:00Z","logger":"telemetryExporter","msg":"Exporting telemetry","data":{...,"SnippetsFiltersDirectives":["aio-http","allow-location","deny-location","worker_shutdown_timeout-main","auth_delay-server"],"SnippetsFiltersDirectivesCount":[1,1,1,1,1],..."SnippetsFilterCount":1}}

Output with no SnippetsFilters deployed.

{"level":"debug","ts":"2024-10-14T19:13:11Z","logger":"telemetryExporter","msg":"Exporting telemetry","data":{..."SnippetsFiltersDirectives":[],"SnippetsFiltersDirectivesCount":[],..."SnippetsFilterCount":0,}}

Closes #2373
Closes #2375

Checklist

Before creating a PR, run through this checklist and mark each as complete.

• I have read the CONTRIBUTING doc
• I have added tests that prove my fix is effective or that my feature works
• I have checked that all unit tests pass after adding my changes
• I have updated necessary documentation
• I have rebased my branch onto main
• I will ensure my PR is targeting the main branch and pulling from my branch from my own fork

Release notes

If this PR introduces a change that affects users and needs to be mentioned in the release notes,
please add a brief note that summarizes the change.

[bjee19]

Will add manual testing soon, though review of naming and logic can happen now.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 88.80%. Comparing base (8dd553d) to head (ab3bcb7).
Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2677      +/-   ##
==========================================
- Coverage   88.89%   88.80%   -0.10%     
==========================================
  Files         110      109       -1     
  Lines        8556     8386     -170     
  Branches       50        0      -50     
==========================================
- Hits         7606     7447     -159     
+ Misses        892      881      -11     
  Partials       58       58              

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[sjberman]

I'd prefer if the directive came first in the string, then the context. This goes for all variable/function names too.

[salonichf5]

looks good to me

[bjee19]

Verified data on xcdf side, will now merge.