perf(oidc): optimize the introspection endpoint (#6909)

* get key by id and cache them

* userinfo from events for v2 tokens

* improve keyset caching

* concurrent token and client checks

* client and project in single query

* logging and otel

* drop owner_removed column on apps and authN tables

* userinfo and project roles in go routines

* get  oidc user info from projections and add actions

* add avatar URL

* some cleanup

* pull oidc work branch

* remove storage from server

* add config flag for experimental introspection

* legacy introspection flag

* drop owner_removed column on user projections

* drop owner_removed column on useer_metadata

* query userinfo unit test

* query introspection client test

* add user_grants to the userinfo query

* handle PAT scopes

* bring triggers back

* test instance keys query

* add userinfo unit tests

* unit test keys

* go mod tidy

* solve some bugs

* fix missing preferred login name

* do not run triggers in go routines, they seem to deadlock

* initialize the trigger handlers late with a sync.OnceValue

* Revert "do not run triggers in go routines, they seem to deadlock"

This reverts commit 2a03da2127.

* add missing translations

* chore: update go version for linting

* pin oidc version

* parse a global time location for query test

* fix linter complains

* upgrade go lint

* fix more linting issues

---------

Co-authored-by: Stefan Benz <46600784+stebenz@users.noreply.github.com>

cmd/defaults.yaml

@@ -314,6 +314,11 @@ OIDC:
       Path: /oauth/v2/device_authorization # ZITADEL_OIDC_CUSTOMENDPOINTS_DEVICEAUTH_PATH
   DefaultLoginURLV2: "/login?authRequest=" # ZITADEL_OIDC_DEFAULTLOGINURLV2
   DefaultLogoutURLV2: "/logout?post_logout_redirect=" # ZITADEL_OIDC_DEFAULTLOGOUTURLV2
+  Features:
+    # Wheter projection triggers are used in the new Introspection implementation.
+    TriggerIntrospectionProjections: false
+    # Allows fallback to the Legacy Introspection implementation
+    LegacyIntrospection: false
 
 SAML:
   ProviderConfig: