Changes Made
Adds issue assign and pr assign to assign users to issues & PRs, and issue unassign and pr unassign to do the opposite.
fj issue assign <ISSUE> <USERS..>fj issue unassign <ISSUE> <USERS..>fj pr assign [--pr <PR>] <USERS..>fj pr unassign [--pr <PR>] <USERS..>
Closes #338
Code of Conduct
- I agree to act in accordance with the CoC & AI Agreement.
- This contribution was not generated by an LLM, even in part.