[Feature request] Allow specifying PR title and description

[jcfranco]

In our projects, we use a custom PR description to indicate automation and prevent manual edits. It would be great to have the ability to specify a custom title and description, similar to create-pull-request's title and body inputs.

Thanks for the awesome action! 🎉

[akhilmhdh]

Good suggestion!. I'll make a release for this tomorrow