Add initial migration for moderation app and resolve seed command issues

- Created an empty migration file for the moderation app to enable migrations.
- Documented the resolution of the seed command failure due to missing moderation tables.
- Identified and fixed a VARCHAR(10) constraint violation in the User model during seed data generation.
- Updated role assignment in the seed command to comply with the field length constraint.

apps/accounts/management/commands/setup_groups.py

@@ -15,17 +15,17 @@ class Command(BaseCommand):
             create_default_groups()
 
             # Sync existing users with groups based on their roles
-            users = User.objects.exclude(role=User.Roles.USER)
+            users = User.objects.exclude(role="USER")
             for user in users:
                 group = Group.objects.filter(name=user.role).first()
                 if group:
                     user.groups.add(group)
 
                     # Update staff/superuser status based on role
-                    if user.role == User.Roles.SUPERUSER:
+                    if user.role == "SUPERUSER":
                         user.is_superuser = True
                         user.is_staff = True
-                    elif user.role in [User.Roles.ADMIN, User.Roles.MODERATOR]:
+                    elif user.role in ["ADMIN", "MODERATOR"]:
                         user.is_staff = True
                     user.save()