feat(actions): add pause action for KEDA ScaledObject and ScaledJob (#25301)

[rickbrouwer]

This PR adds resource actions for KEDA ScaledObject and ScaledJob:

• 'Pause' action adds annotation autoscaling.keda.sh/paused=true (both ScaledObject and ScaledJob)
• 'Paused-Replicas' action adds annotation autoscaling.keda.sh/paused-replicas: “" (only ScaledObject)
• 'Resume' action removes the annotation

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.
• The title of the PR states what changed and the related issues number (used for the release note).
• The title of the PR conforms to the Title of the PR
• I've included "Closes [ISSUE #]" or "Fixes [ISSUE #]" in the description to automatically close the associated issue.
• [n/a] I've updated both the CLI and UI to expose my feature, or I plan to submit a second PR with them.
• [n/a] Does this PR require documentation updates?
• [n/a] I've updated documentation as required by this PR.
• I have signed off all my commits as required by DCO
• I have written unit and/or e2e tests for my change. PRs without these are unlikely to be merged.
• My build is green (troubleshooting builds).
• My new feature complies with the feature status guidelines.
• I have added a brief description of why this PR is necessary and/or what this PR solves.
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• [n/a] Optional. For bug fixes, I've indicated what older releases this fix should be cherry-picked into (this may or may not happen depending on risk/complexity).

Fixes: #25301

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 62.25%. Comparing base (5c6aa59) to head (23dc1ae).
⚠️ Report is 55 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master   #25302      +/-   ##
==========================================
+ Coverage   62.23%   62.25%   +0.02%     
==========================================
  Files         351      351              
  Lines       49346    49368      +22     
==========================================
+ Hits        30712    30736      +24     
+ Misses      15696    15692       -4     
- Partials     2938     2940       +2     

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[rickbrouwer]

I'm going to set this back to draft. I will add an extra option (paused-replicas).

--

added paused-replicas

[JorTurFer]

I think that this could be interesting for you @blakepettersson. IIRC you added some lua configs for KEDA in the past

[rickbrouwer]

Added discovery tests (advice from @reggie-k)

[blakepettersson]

LGTM!