refactor(mobile): remove shared module (#9363)

mobile/lib/utils/hooks/timer_hook.dart

@@ -0,0 +1,48 @@
+import 'package:async/async.dart';
+import 'package:flutter/material.dart';
+import 'package:flutter_hooks/flutter_hooks.dart';
+
+RestartableTimer useTimer(
+  Duration duration,
+  void Function() callback,
+) {
+  return use(
+    _TimerHook(
+      duration: duration,
+      callback: callback,
+    ),
+  );
+}
+
+class _TimerHook extends Hook<RestartableTimer> {
+  final Duration duration;
+  final void Function() callback;
+
+  const _TimerHook({
+    required this.duration,
+    required this.callback,
+  });
+  @override
+  HookState<RestartableTimer, Hook<RestartableTimer>> createState() =>
+      _TimerHookState();
+}
+
+class _TimerHookState extends HookState<RestartableTimer, _TimerHook> {
+  late RestartableTimer timer;
+  @override
+  void initHook() {
+    super.initHook();
+    timer = RestartableTimer(hook.duration, hook.callback);
+  }
+
+  @override
+  RestartableTimer build(BuildContext context) {
+    return timer;
+  }
+
+  @override
+  void dispose() {
+    timer.cancel();
+    super.dispose();
+  }
+}