Add a GitHub check to ensure consistency of generated manifests

[jgwest]

What type of PR is this?
/kind enhancement

What does this PR do / why we need it:

• Add a new GitHub action to verify that PR contributors have run make manifests make bundle and make manifests and contributed the result.
• This works with the changes made previously to ensure operator-sdk version is as expected.

Have you updated the necessary documentation?

• Documentation update is required by this PR.
• Documentation has been updated.

[openshift-ci]

Skipping CI for Draft Pull Request.
If you want CI signal for your change, please convert it to an actual PR.
You can still manually trigger a test run with /test all

[openshift-ci]

[APPROVALNOTIFIER] This PR is NOT APPROVED

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[jgwest]

/retest

[jgwest]

/retest

[jgwest]

/retest

[jparsai]

/lgtm

[openshift-ci]

New changes are detected. LGTM label has been removed.

[jgwest]

Merging as prow tests failures are not related.