Add kubernetes-actions feature + required rbac

[frank-spano]

What does this PR do?

Adds the option for datadog-operator users to enable the kubernetes-actions feature in the cluster agent, and the required rbac.

Motivation

Releasing the kubernetes-actions pipeline to preview

Additional Notes

Anything else we should know when reviewing?

Minimum Agent Versions

Are there minimum versions of the Datadog Agent and/or Cluster Agent required?

• Agent: vX.Y.Z
• Cluster Agent: v7.79.0

Describe your test plan

Write there any instructions and details you may have to test your PR.

Checklist

• [ x] PR has at least one valid label: bug, enhancement, refactoring, documentation, tooling, and/or dependencies
• [ x] PR has a milestone or the qa/skip-qa label
• [ x] All commits are signed (see: signing commits)

[codecov-commenter]

Codecov Report

❌ Patch coverage is 93.22034% with 4 lines in your changes missing coverage. Please review.
✅ Project coverage is 43.74%. Comparing base (d5cdf64) to head (b5d0574).

Files with missing lines	Patch %	Lines
...roller/datadogagent/feature/kubeactions/feature.go	92.00%	2 Missing and 2 partials ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #3099      +/-   ##
==========================================
+ Coverage   43.59%   43.74%   +0.14%     
==========================================
  Files         354      356       +2     
  Lines       30224    30283      +59     
==========================================
+ Hits        13177    13248      +71     
+ Misses      16176    16155      -21     
- Partials      871      880       +9     

Flag	Coverage Δ
unittests	43.74% <93.22%> (+0.14%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Files with missing lines	Coverage Δ
internal/controller/datadogagent/controller.go	48.00% <ø> (ø)
...ntroller/datadogagent/feature/kubeactions/const.go	100.00% <100.00%> (ø)
...rnal/controller/datadogagentinternal/controller.go	0.00% <ø> (ø)
pkg/testutils/builder.go	2.19% <100.00%> (+2.19%)	⬆️
...roller/datadogagent/feature/kubeactions/feature.go	92.00% <92.00%> (ø)

... and 1 file with indirect coverage changes

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