feat(git/gitconfig): add `includeIf` field for `~/work` directory
feat(git/gitconfig): add `includeIf` field for `~/work` directory

Set the `includeIf` setting field in order to use `[user]` settings for
any repositories created under the `~/work` directory. With this
setting field, the `[user]` settings in the `~/work/.gitconfig` file can
override the global default settings in the `~/.gitconfig` file.

shoichiaizawa/dotfiles,shoichiaizawa/dotfiles,shoichiaizawa/dotfiles