`--link`

I want an option to just LINK the config files, no installs. Reason is I might be on a server where I just want to get nvim a a couple of more things and they might fail to install for several reasons, but I don't want to fix it for that specific case, I want to link the config as fast as possible.

```bash
$ dot --link neovim
✔︎ *.cli.neovim linked
```