Determine team structure & rights

[aubertc]

csci-1301 had an instructors / UCAs structures, with the (implicit) assumption that instructors were admin on many things:

and that UCAs were "triage" on the website and admin on "their own" repos:

I don't think we should maintain the assumption that your employment status determines the name of your team and your responsibilities. We could switch to a "dev." / "maintainer" / "tutor" model with rights on repos to be determined.

[jweeks2023]

I like that setup, but it may be more apt to use the "course assistant" title in that case.

[aubertc]

Ok. Maybe we keep it this way for now, most notably because I don't think we'll migrate the UCA repos for projects to PCP, we'll probably keep them on CSCI-1301.