Add Auth0 to manage profiles

[YoruNoHikage]

This replace custom auth with auth0 but has some downsides.

• Username, email, first name and last name might not be given, we can only identify users through their user_id
• We need to rely on auth0 rules to create a person profile on our database side (with a specific callback hack on the dev env)
• We need to connect an email provider (to reset password, ...)

I have to investigate the management API so we can connect other identities, change password... directly on the profile.

[YoruNoHikage]

We're moving to remix and a simpler auth with remix-auth.