Noves-Inc/canton-data-app: docs/authentication/keycloak.md

# Keycloak configuration The Noves Data App needs two Keycloak clients: | Client | Type | Use | |---|---|---| | `noves-canton-data-app-browser` | Public, authorization code with PKCE | Human sign-in | | `noves-canton-data-app-m2m-indexing` | Confidential, service account | Background participant M2M