User Signup Form - Additional Functionality

[indi-rin]

• Be presented with the user agreement
  If the user agrees - allow signup to continue.
  If disagree: display prompt and return to login/signup page.
• Implement additional fields such as:
  Age (required)
  Bio (optional)
• ProfileImage (optional) (default image)
  add default images to firebase storage
• At least 3 default profileImage
• Add hashing to passwords for security or removing password from being sent to firestore
• Fixing age type.
• Register button at the end.