wip separate widget

mobile/lib/utils/hooks/interval_hook.dart

@@ -0,0 +1,18 @@
+import 'dart:async';
+import 'dart:ui';
+
+import 'package:flutter_hooks/flutter_hooks.dart';
+
+// https://github.com/rrousselGit/flutter_hooks/issues/233#issuecomment-840416638
+void useInterval(Duration delay, VoidCallback callback) {
+  final savedCallback = useRef(callback);
+  savedCallback.value = callback;
+
+  useEffect(
+    () {
+      final timer = Timer.periodic(delay, (_) => savedCallback.value());
+      return timer.cancel;
+    },
+    [delay],
+  );
+}