Relates to coder/coder#13328

Create notification_template instances for the following events, and enqueue notifications with those templates:

• feat: notify about created user account coder#14010
• feat: notify when a user account is deleted coder#14113
• feat: add notification for suspended/activated account coder#14367

These two notifications require some additional functionality, and perhaps require RFCs:

• Add password reset via email coder#14232
  password reset (receiver: user) feat: implement password reset flow #34
• user email verification (receiver: user) feat: user email verification #35