AuthZ: Change cache interface (#99058)

* Authz: Switch to remotecache

* Todos

* lint

* lint test

* test readibility

* Remove ttls

* implement a cache wrap

* Rm unused func

* Comment

* Update workspace:

* Use cache

* Fix comment

pkg/services/authz/rbac/models.go

@@ -25,7 +25,7 @@ type ListRequest struct {
 }
 
 type FolderNode struct {
-	uid          string
-	parentUID    *string
-	childrenUIDs []string
+	UID          string
+	ParentUID    *string
+	ChildrenUIDs []string
 }