Add support for PodResource to set readiness gates in status

[shawkins]

Is your enhancement related to a problem? Please describe

Based upon #5474 it can be burdensome to understand how to manipulate pod status.

Describe the solution you'd like

Consider moving the method provided on the discussion to PodResource.

Describe alternatives you've considered

No response

Additional context

There are two additional complications - that working with status involves the parent, and working with conditions as a list instead of a map. Each makes it more difficult to conceptually / actually work with status - projects such a managed kafka, and keycloak have similar issues dealing with conditions. There is no easy answer however because we're dealing with the upstream schema.

[stale]

This issue has been automatically marked as stale because it has not had any activity since 90 days. It will be closed if no further activity occurs within 7 days. Thank you for your contributions!