feat(gentoo)!: use `vcs_info` to support other VCSs (#9440)
feat(gentoo)!: use `vcs_info` to support other VCSs (#9440)

* prettify vcs infomation using `vcs_info`

* Show symbol when there are untracked files in git

Co-authored-by: freeyoung <5a71c4a2b1d580027fab638e1720aa1e51ff2708@qq.com>
tekniklr/oh-my-zsh,tekniklr/oh-my-zsh