Custom PR body on submit command

[KarbitsCode]

Description of the new feature / enhancement

• Continued from https://github.com/microsoft/winget-create/discussions/568

The idea is to add the ability to set a custom md or text to PR body on submit command, just like this has the ability to set custom PR title.

And also add an option to not open the PR page after the submit command. That would be very helpful for my automation.

Proposed technical implementation details

No response

[mdanish-kh]

And also add an option to not open the PR page after the submit command. That would be very helpful for my automation.

Opened the above linked PR for this request