feat: finish out user settings page

[golanglemonade]

The user-settings profile page currently only allows the update of first + last name. We need to finish this out:

1. Avatar - this currently doesn't send the upload to the backend, this should be updated to actually store the image on the backend. The user resolver accepts a file upload as part of the input:

   mutation UpdateUser($updateUserId: ID!, $input: UpdateUserInput!, $avatarFile: Upload) {
     updateUser(id: $updateUserId, input: $input, avatarFile: $avatarFile) {
       user {
       ...
         }
       }
     }
   }
   

2. Allow the update of the following fields as well:

• email
• displayName
• defaultOrg

3. Allow for account deletion - you should expect errors such as not being able to delete your account if you are the owner of an organization