Delete user account

Allow users to delete their Genesys user account.

The User/SID is linked to many entities. It is best if we replace all personal information with:

1. email: Used for logging in and must be unique. Replace with deleted@${timestamp} (e.g. deleted@2134523311)
2. fullName: Displayed in various places, replace with Account removed
3. accountType: Add DELETED option and use that.
4. enabled: Set to false.