feat(crd) add a CRD-checking system

[rainest]

What this PR does / why we need it:

Add a CRD version index and failure condition when the installed CRDs are below the requested level. On failure, chart actions will print a message with the update command.

One of the options from https://github.com/Kong/charts/issues/890

Special notes for your reviewer:

The CRD annotation this check relies on does not exist yet. We can add it with additional configuration in KIC's config/crd/kustomization.yaml:

commonAnnotations:
  konghq.com/kic-crd-release: 2.9.0

Draft pending additional testing and possibly some mechanism for less manual version maintenance.

Checklist

[Place an '[x]' (no spaces) in all applicable fields. Please remove unrelated fields.]

• [ ] PR is based off the current tip of the main branch.
• [ ] Changes are documented under the "Unreleased" header in CHANGELOG.md
• [ ] New or modified sections of values.yaml are documented in the README.md
• [ ] Commits follow the Kong commit message guidelines

[rainest]

Closed as part of my issue/PR handover. Was abandoned for lack of priority, but code's available for reference in the event we want to try a NOTES.txt CRD alert in the future.