feat: basic user, tags and role sync to keycloak

[nanu-c]

This pr adds a directus extension that syncs users, tags + roles to keycloak, when they are changed.
For this to work I had to change the permissions for the directus keycloak client so it needs a reimport of the keycloak config.
Basically the directus_user get's a new field keycloak_uuid as unique identifier to track also changes in the e-mail address.
collectivo_tags and directus_role are created as groups in the form of Has a dog -> has-a-dog. A group that doesn't exists is created.

Missing

• export the directus flow and add it to this pr
• add the keycloak_uuid to the directus user in a migration
• add keycloak_uuid on user creation -> difficult, i can't modify a item that isn't created yet
• support batch changes
  

Nice to have:

• set new password from admin interface that is synced to keycloak

closes #53

[nanu-c]

Hey should finish this or close it?