[chore][backend] Add workflow to validate affected generated files

[chahatsagarmain]

Description of your changes:

• Resolves chore: Add CI checks for proto generated library validations #11532
• Added a workflow that should manually invoke the scripts to generate the go and python files
• The diff generated during the workflow should indicate that new generated files in not included

Checklist:

• You have signed off your commits
• The title for your pull request (PR) should follow our title convention. Learn more about the pull request title convention used in this repository.

[google-oss-prow]

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[google-oss-prow]

Hi @chahatsagarmain. Thanks for your PR.

I'm waiting for a kubeflow member to verify that this patch is reasonable to test. If it is, they should reply with /ok-to-test on its own line. Until that is done, I will not automatically test new commits in this PR, but the usual testing commands by org members will still work. Regular contributors should join the org to skip this step.

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[hbelmiro]

/ok-to-test

[hbelmiro]

cc @DharmitD

[hbelmiro]

/ok-to-test

[github-actions]

Approvals successfully granted for pending runs.