feat: git --set-upstream option

[ghostsquad]

Feature Request

set the upstream branch automatically when pushing

git push --set-upstream origin $(git_current_branch)

[vivaxy]

Looks fine to me.
A little detail concerned, I'm not sure if --set-upstream on every push is a good practice.

[ghostsquad]

@vivaxy it's an idempotent action, and doesn't take any time. I alias this to gpsup anyways, and use that all the time. I don't see any downside to doing it on every push.