Remote SSH: Copy .gitconfig to host

[jmeachum]

Similar to how remote containers have the .gitconfig file copied to it during setup, it would be helpful to have the file copied when connecting to an ssh host. If even a subset of the file, or a way to configure what that needs to be on the host via an extension setting.

My use case I need at a minimum the user.name and user.email setting copied or created when connecting to a host.