Support self hosted gitlab for `gs stack submit`

[saurabytes]

I see that supported remotes currently are publicly available Gitlab and Github.
Though I dont see a strong reason to allow git-spice to be able to push to self-hosted Gitlab instances for following reasons:

• All the api calls remains the same
• Git push commands dont change for a tracked repo with Origin configued
• Even if the support for Merge request wont be too challenging, the tool can sync the changes easily

I guess the tool can have additional config to support it fully like
GITLAB_HOST
GITLAB_TOKEN

[abhinav]

Hey @saurabytes, thanks for your interest.
You'll be happy to hear that Self-hosted GitLab is already supported!
https://abhinav.github.io/git-spice/setup/auth/#gitlab-self-hosted has instructions.

[saurabytes]

Thats great. But I have still having some issues:

• I setup my GITLAB_URL in my rc file along with GITLAB_TOKEN.
• gs branch submit or repo sync are failing with FTL: gs create Gitlab Client: unknown auth type :100

[saurabytes]

Looks like I had to unset GITLAB_TOKEN as its causing issues for some reason but its working pretty well.

[abhinav]

Oops, yeah that looks like a bug.
The GitLab Forge implementation appears to break if used with GITLAB_TOKEN.
I'll try to get that fixed soon.

[abhinav]

Thanks for reporting, @saurabytes. Fixed in #613 and released in 0.12.