Make chezmoi init user remember the username for http

[davidolrik]

When doing chezmoi init user, chezmoi will guess the repo using following table taken from the documentation.

Pattern	HTTPS Repo today	HTTPS Repo proposed
user	https://github.com/user/dotfiles.git	https://user@github.com/user/dotfiles.git
user/repo	https://github.com/user/repo.git	https://user@github.com/user/repo.git
site/user/repo	https://site/user/repo.git	https://user@site/user/repo.git
sr.ht/~user	https://git.sr.ht/~user/dotfiles	https://user@git.sr.ht/~user/dotfiles
sr.ht/~user/repo	https://git.sr.ht/~user/repo	https://user@git.sr.ht/~user/repo

I have added a proposed column that also remembers the username in the .git/config thus saving some typing when doing chezmoi update

[twpayne]

Nice suggestion, thank you. Implemented in #2562.