Use a Dropdown to set scope when picking a repository context

[mads-hartmann]

Instead of using /b, /p etc. to scope the search filter I'd love for us to use a Dropdown instead as that's the pattern I see used the most often in Raycast extensions.

E.g. something along the lines of this the screenshow below. Keep in mind I only added the dropdown to show what I mean, I didn't actually implement the filtering so that's why the list stil shows branches, pull-requests, issues.

I don't have the me option in the list in this quick prototype, but I think it makes sense to add that too ☺️