feat: listen for/handle supabase auth events

[Drew-Macgibbon]

I need to create a simple webhook function to listen for these events and handle them effectively.

Todo

• [ ] middleware: listen for supabase auth events
• [ ] util: handle supa auth SIGNED_IN
• [ ] util: handle supa auth SIGNED_OUT
• [ ] util: handle supa auth TOKEN_REFRESHED
• [ ] util: handle supa auth USER_UPDATED
• [ ] util: handle supa auth PASSWORD_RECOVERY