Automate the branch entry to version increment workflow.

[prudhvigodithi]

Is your feature request related to a problem? Please describe

Coming from the comment #1375 (comment)
Exiting version increment workflow, works by a branch input passed to matrix array, once the branch is the array, release manager can trigger the workflow with single click, but still the branch entry is a manual process that has to be done by a release manager. This involves raising a PR to add a new release branch and get it approved before we run it.

Describe the solution you'd like

Extend the existing manifest workflow that raises an [AUTO] PR with new version by adding new version manifests and updating the check-for-build.jenkinsfile. Sample PR #2599.
Add a logic to update the version increment workflow to have the new <MAJOR_VERSION.x> branch entry.

Describe alternatives you've considered

No response

Additional context

No response

[prudhvigodithi]

Closing this issue as the related PR, to add the branch entry is merged.
Thank you