Add UpdateGitMod and add safety to InstallGitMod.
`!args.Any()` will not work as the given command
	is always an arg.
Moved mod-operation commands to ModManager.
Reordered Utility/Program command dict (grouping).
Add ModManager.InstallMod via `--install-mod`
Add `common` and `modchooser` to uninstall blacklist.