Feature #454 - Add --push-only flag to allow developers to only push the feature branch

[daemocles]

• Add --push-only flag to only push a feature branch

What does this change

This feature adds a flag named --push-only to the run command which will allow developers to create feature branches without creating PRs.

What issue does it fix

Closes #454

Notes for the reviewer

Put any questions or notes for the reviewer here.

Checklist

• [x] Made sure the PR follows the CONTRIBUTING.md guidelines
• [x] Tests if something new is added

[daemocles]

I have added test cases. 2 for conflict errors, and 1 for success

[github-actions[bot]]

Included in release v0.51.0 🎉