feat: Adding flexibility for RBACs definition.

[rodrigobersa]

What does this PR do?

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Motivation

This PR intends to give flexibility for customers to define custom RBACs for each team with specific permissions.
We are also adding multiple patterns to demonstrate the usage of the variables to achieve the intend auth definitions for each use case.

• Resolves feature request: elastic admin team creation without relying on system:master #17
• Resolves Team Management to support different personas and features #18

More

• Yes, I have tested the PR using my local account setup (Provide any test evidence report under Additional Notes)
• Yes, I ran pre-commit run -a with this PR

For Moderators

• E2E Test successfully complete before merge?

Additional Notes

[rodrigobersa]

A lot of changes! Try my best to not break the interface. Ready for thoughts and comments.

[github-actions]

This PR has been automatically marked as stale because it has been open 30 days
with no activity. Remove stale label or comment or this PR will be closed in 10 days

[github-actions]

Pull request closed due to inactivity.

[github-actions]

This PR has been automatically marked as stale because it has been open 30 days
with no activity. Remove stale label or comment or this PR will be closed in 10 days

[github-actions]

Pull request closed due to inactivity.