Zanzana: app platform style write APIs (#112812)

* refactor zanzana client instantiation

* refactor client imports

* POC write API (Mutate)

* fix linter

* delete exisitng folder parents

* refactor common functions

* minor refactor

* groupd operations by type

* atomic folder operations

* use deleteExisting for deletes

* Add tests for folders

* more tests

* resource permissions tests

* add more tests

* fix mock zanzana client

* fix linter

* fix linter

* re-use types from apps

* add some comments to the protobuf

pkg/services/accesscontrol/dualwrite/collectors_test.go

@@ -242,6 +242,10 @@ func (m *mockZanzanaClient) Compile(ctx context.Context, id authlib.AuthInfo, re
 	return args.Get(0).(authlib.ItemChecker), args.Get(1).(authlib.Zookie), args.Error(2)
 }
 
+func (m *mockZanzanaClient) Mutate(ctx context.Context, req *authzextv1.MutateRequest) error {
+	return nil
+}
+
 func TestIntegrationTeamMembershipCollector(t *testing.T) {
 	testutil.SkipIntegrationTestInShortMode(t)