✨(resource-server) add SCIM /Me endpoint

This provide a "self-care" SCIM endpoint, authenticated with OIDC token
introspection. This endpoint will be use by services to fetch the user's
team list.

We chose to use the SCIM format (even if this is not a SCIM context) to
make it easier to understand/maintain/plug.

CHANGELOG.md

@@ -8,6 +8,10 @@ and this project adheres to
 
 ## [Unreleased]
 
+### Added
+
+- ✨(resource-server) add SCIM /Me endpoint #895
+
 ## [1.17.0] - 2025-06-11
 
 ### Added