[FEATURE REQUEST] use PR target branch instead od repository main one

[mcosta74]

would be nice if for a PR you can check against the target branch instead of using the main one

[GreatWizard]

Hello @mcosta74 ,

Thanks for your feedback :)
I made a PR to add this option: #5

What do you think?

[MikeMatusz]

I'm currently considering adopting this GH action, so I don't have real experience with it yet, but noticed this issue since it sounds like the behavior I would like to set up. If I'm understanding @mcosta74 correctly, I'm not sure #5 would help because that just lets you trigger "default branch mode" on a different branch, which could be useful in its own right. But I also think it might already be possible to do what was requested.

The "target branch diff coverage" is defined by the base-summary-filename option, so as long as the target branch has a summary report on the wiki stored in a path that can be derived from the target branch metadata available, I could set up my PR workflow to pass the filename associated with the target branch, which would generate the differ report against that branch instead of the main branch. Does that seem accurate?