Add implementation for folder store methods (#57700)

* Add implementation for folder store methods

* Add Move implementation

* Add back comment and fix query

* Remove Move from store

* Adjust GetChildren

* Fix errutil error declaration and usage

* Add org id to get children query

pkg/services/folder/folderimpl/sqlstore_test.go

@@ -8,8 +8,6 @@ func TestDelete(t *testing.T) {}
 
 func TestUpdate(t *testing.T) {}
 
-func TestMove(t *testing.T) {}
-
 func TestGet(t *testing.T) {}
 
 func TestGetParent(t *testing.T) {}