AuthN: Change the external service account state on plugin state change (#77157)

* Disable plugin service account

* Revert extsvc injection

* handle plugin state changes

* Use isProxyEnabled

* Remove plugininteg changes

* Change update function to also work for mysql 😩

* Change test to also check no collateral update

* Update pkg/services/serviceaccounts/database/store_test.go

* Update pkg/services/serviceaccounts/database/store_test.go

pkg/services/serviceaccounts/models.go

@@ -196,6 +196,12 @@ type ManageExtSvcAccountCmd struct {
 	Permissions []accesscontrol.Permission
 }
 
+type EnableExtSvcAccountCmd struct {
+	ExtSvcSlug string
+	Enabled    bool
+	OrgID      int64
+}
+
 // AccessEvaluator is used to protect the "Configuration > Service accounts" page access
 var AccessEvaluator = accesscontrol.EvalAny(
 	accesscontrol.EvalPermission(ActionRead),