add room access settings

lib/helpers/hooks/saving.dart

@@ -0,0 +1,25 @@
+import "dart:async";
+
+import "package:flutter_hooks/flutter_hooks.dart";
+
+final class Saving({
+  required final bool active,
+  required final Future<void> Function(FutureOr<void> Function() action) run,
+}) {
+  factory use() {
+    final context = useContext();
+    final active = useState(false);
+
+    return .new(
+      active: active.value,
+      run: (action) async {
+        active.value = true;
+        try {
+          await action();
+        } finally {
+          if (context.mounted) active.value = false;
+        }
+      },
+    );
+  }
+}