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[bot]]

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[bot]]

[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by: Once this PR has been reviewed and has the lgtm label, please ask for approval from jgwest. For more information see the Kubernetes Code Review Process.

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[jgwest]

/retest

[jgwest]

/retest

[jgwest]

/retest

[jparsai]

/lgtm

[openshift-ci[bot]]

New changes are detected. LGTM label has been removed.

[jgwest]

Merging as prow tests failures are not related.