adding groups and editing groups

backend/controllers/courseController.js

backend/controllers/userController.js

backend/models/course.js

backend/models/user.js

backend/routes/courseRoutes.js

database/WiredTiger.turtle

database/WiredTiger.wt

database/_mdb_catalog.wt

database/collection-100--4705128055777258621.wt

database/collection-161--4705128055777258621.wt

database/collection-163--4705128055777258621.wt

database/collection-165--4705128055777258621.wt

database/collection-167--4705128055777258621.wt

database/collection-4-493346523475889137.wt

database/collection-95--4705128055777258621.wt

database/collection-97--4705128055777258621.wt

database/diagnostic.data/metrics.2024-08-12T22-41-07Z-00000

database/diagnostic.data/metrics.2024-08-14T11-37-21Z-00000

database/diagnostic.data/metrics.interim

database/index-103--4705128055777258621.wt