Summary: Adding operator support for provider.

Test Plan:
  - Created a providerCR -> edit -> remove
  - Validated auto-provider
  - Created a new universe with provider
  - Tried deleting a provider with a universe -> blocked
  - Add/remove - zones/regions
  - Created provider using cert-manager

Reviewers: vkumar, dshubin, anijhawan

Reviewed By: dshubin, anijhawan

Differential Revision: https://phorge.dev.yugabyte.com/D45351