Add gitlab extension

[tonka3000]

Description

Add GitLab extension

Type of change

• New extension

Screenshot

⚙️ Initial Setup (with audio)

setup_gitlab_raycast_extension.mp4

🚴 Tour de Raycast GitLab commands (with audio)

tour_de_gitlab_raycast_extension.mp4

Checklist

• I read the contribution guidelines

[PitNikola]

@tonka3000, could you please provide a video for your commands? Nobody on our team is a GitLab user so we might not have enough content when setting up new account.

[tonka3000]

Sure, I will add some video for setting it up and for the commands. @mattisssa already done this in the past.

[tonka3000]

@PitNikola I've added the videos to the description.

[PitNikola]

Hey Michael! Quite impressive extension you've got here! Generally looks good, but I noticed few things that we would need to address before publishing:

1. Empty state view flickers before initial data is loaded. I noticed it in few of your commands. This most likely happens because you render empty list before the data arrives from network. Please check out this example on how to avoid that.
2. In some cases you have the action panel that mixes actions with icons and without. This cause layout to look inconsistent. We are going add to our guidelines a rule that you should either provide icons for all actions or not provide them at all (at rare cases). Let me know if you struggle coming up with appropriate icons for particular actions, we might help.
3. You specified MPL-2.0 license in package.json. Please use MIT license since that's what what we have in the root of the repo and it's most permissive one.

All 3 issues apply to your other extensions so you'll need to address it everywhere.

[tonka3000]

@PitNikola Initial state flickering should now be gone. I've added all missing action icons (mostly it was the Show Details action).