feat: add orphaned resource count metric #6391

[jaehanbyun]

Closes: #6391

Checklist:

• Either (a) I've created an enhancement proposal and discussed it with the community, (b) this is a bug fix, or (c) this does not need to be in the release notes.
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What I have done:

For issue #6391, I have added a metric that indicates the count of orphaned resources for each application. This new metric is called argocd_app_orphaned_resources_count{label...} and tracks the number of orphaned resources per application.

Metric Output:

[bunnyshell]

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[ishitasequeira]

Thanks @jaehanbyun !! The overall change looks good!!

[jaehanbyun]

Hi @ishitasequeira, Auto merge did not execute properly. Could you please check?
Thanks!

[ishitasequeira]

Hi @ishitasequeira, Auto merge did not execute properly. Could you please check?

Thanks!

Looks like the tests failed. I will try rerunning the tests.

[jaehanbyun]

Hello @ishitasequeira,

Could you please rerun the tests when you have a moment? Let me know if you need anything else. Thank you!

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

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Additional details and impacted files

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  Misses            ?    22107           
  Partials          ?     2616           

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[jaehanbyun]

Hi @ishitasequeira,

After re-running the tests, I fixed the problematic part, and confirmed that the tests now pass successfully. PTAL. Thank you!