Digital hackerspace: integrate doorrequestservice with HaSpMan

[BerendWouters]

Since our user management is now done in HaSpMan, and the IdP is Keycloak, we no longer need OpenLDAP.

It should be possible to assign the right to use the "Door" to a user in HaSpMan, and still leverage the power of a local-only approach to open the door. This will still be the biggest challenge: creating a hybrid application, where HaSpMan is running on a cloud, on the public internet, while this service should still be working on the local network only.

[BerendWouters]

The new version (since 1.2.x) is using Keycloak (by implementing a generic OAuth2 client), and users are now managed by Keycloak. The roles KeyVaultCodeAccess and TwentyFourSevenAccess are required to use the GET code and POST open endpoint.

Next steps would be to implement something allowing the HaSpMan app to assign these roles to members.