CreateCustomToken like firebase

[sanmit-vartak]

I was looking out for solution to fit in my current firebase use-case into supabse.
Use case:

1. Create Custom token for user using UID/email from backend service account
2. Sign in user with custom toke using provided same

PS: I do not want user to sign in by himself. since I am allowing anonymous users to use the service without login, and also for my logged users CRM database is separate so keeping their passwords in supabase as well will be redundant

[sanmit-vartak]

@hf

[jpiabrantes]

Would also love this. Right now I am doing my Auth in Firebase just because of this feature.