Feature request: select default merge method in PR comment

[hoodmane]

I have the following problem: I usually squash merge, but when doing backports I want to merge merge so that all of the commits cherry-picked from the main branch don't get squashed together. I have the problem that I have a hard time remembering to select merge since backport prs are pretty unusual. If I accidentally squash merge I have to do a bunch of cleanup work to fix the mess I made. But I remember that I want this when I make the PR. I wish that there was something I could write into the PR comment like

Merge this!

and enhanced-github would select this merge method by default when I go to merge.