Propose data model for storing user profiles

[pjeziorowski]

Requirements

We don't want to store any sensitive data.
We'll use some OIDC for authentication so we don't need to store passwords

• use https://app.creately.com/diagram/ToXBd2y63z4/view as a reference
• propose database schema

We'll use OIDC for authentication. Our backend will receive ID Token from one of OIDC providers e.g. Google - this token gives you information about the user.

[pjeziorowski]

@biswarup1290dass I'm moving it to 'To do' as there is no activity