Issue 11 create custom user model

[melbauerr]

Change Summary

Implemented a Django custom user model to support Transplant Games Admin and Participants.

1. Created a User model (event_registration.User) with the following fields:

• email (unique, required for authentication)
• password (hashed)
• role (Admin or Participant)
• last_login
• created_at
• updated_at
• is_active,is_staff, is_superuser (standard Django flags)

2. Updated settings.py to set AUTH_USER_MODEL

3. Added UserAdmin to admin.py so admin users can create and manage accounts

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Related issue

• Resolve Create custom user model #11

[allyharrison]

Looks good after adding one change 🙂

[MahitGtg]

Just need some tests otherwise looks good.

discussed over discord