feat(oidc): token exchange impersonation (#7516)

* add token exchange feature flag

* allow setting reason and actor to access tokens

* impersonation

* set token types and scopes in response

* upgrade oidc to working draft state

* fix tests

* audience and scope validation

* id toke and jwt as input

* return id tokens

* add grant type  token exchange to app config

* add integration tests

* check and deny actors in api calls

* fix instance setting tests by triggering projection on write and cleanup

* insert sleep statements again

* solve linting issues

* add translations

* pin oidc v3.15.0

* resolve comments, add event translation

* fix refreshtoken test

* use ValidateAuthReqScopes from oidc

* apparently the linter can't make up its mind

* persist actor thru refresh tokens and check in tests

* remove unneeded triggers

internal/command/instance_policy_security_model.go

@@ -35,6 +35,9 @@ func (wm *InstanceSecurityPolicyWriteModel) Reduce() error {
 			if e.AllowedOrigins != nil {
 				wm.AllowedOrigins = *e.AllowedOrigins
 			}
+			if e.EnableImpersonation != nil {
+				wm.EnableImpersonation = *e.EnableImpersonation
+			}
 		}
 	}
 	return wm.WriteModel.Reduce()