feat: add additional resource health checks for pkg.crossplane.io (issue no. #21479)

[jan-mrm]

Addition of resource health checks (with tests) for

pkg.crossplane.io/

• Configuration
• ConfigurationRevision
• Function
• FunctionRevision
• ProviderRevision
  (Provider did already exist)

Closes #21479

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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• I've included "Closes [ISSUE #]" or "Fixes [ISSUE #]" in the description to automatically close the associated issue.
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All modified and coverable lines are covered by tests ✅

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[jan-mrm]

Hey, since I did not add any checks for apiextensions.crossplane.io resources yet should I update the referenced issue and strikethrough or remove those? I'd probably look into them if I got some time but will do in another issue + pr.

[andrii-korotkov-verkada]

Can you give a summary of why each health check is this way? I don't have context on specific resources and many people may not have it too, so adding that context would help reviews. Thanks.

[jan-mrm]

I can, but I when looking into it I found this in the crossplane docs: crossplane-with-argo-cd so it might be better to just use that instead of adding those resource health checks. The provided lua code covers more resources and is tailored and maintained by the cossplane project. So that might be better. What do you think?