Support for host aliases in ~/.ssh/config

[j-magnolia]

Currently, gert does not support git remote ssh URLS that reference aliases defined in ~/.ssh/config. It would be nice if it were possible to support this, but it's also very possible to work around this limitation.

Desired use case:

~/.ssh/config contains

Host: my-git-server
Hostname: git.mydomain.com
User: git
IdentityFile: my-git/id_ed25519

and git remote -v returns

origin  my-git-server:myself/myrepo.git (fetch)
origin  my-git-server:myself/myrepo.git (push)

Wishing for gert::git_push(), gert::git_pull(), etc. to work with this use case.

It may not be possible, or it may be very difficult to do this with the libgit2 API, so a #wontfix response would be reasonable.