Feat: Add a TA role

[Laith-Grira]

Change Description

Added a new role TA

• TAs are linked with a specific professor
• TAs can add/update/delete the student/groups/projects data
• TAs check sections but cannot create/update/delete them
• TAs can add students but cannot import them

Related PR/Issues, JIRAs

How to Verify

Verification

• PR/Change is verified in local dev environment

Tests

• Unit tests added/updated
• Integration tests added/updated