[rush] Git hooks in Rush

[natalieethell]

Could Rush support git hooks?

[octogonz]

If we had Rush manage this, I'm thinking it could be extremely simple. I don't even think we'd need to cook up a fancy config section. It could just be a folder like common/config/git-hooks that gets copied into .git/hooks, deleting whatever is already there. Maybe this happens automatically as part of rush install.

When we looked at Husky, it's focused on mapping Git's scripts to NPM lifecycle scripts, which is great for getting people started. But at the point where you're setting up a serious multi-project monorepo, I don't think that developer's going to be intimidated by the requirement to write a Bash script that invokes their script.