feat: support custom tracker url (#59)

ui/flutter/lib/pages/setting/setting_controller.dart

@@ -1,12 +1,16 @@
 import 'package:get/get.dart';
 
-import '../../setting/setting.dart';
-
 class SettingController extends GetxController {
-  final setting = Setting.instance.obs;
-  final tapStatues = <int, bool>{}.obs;
+  final tapStatues = <String, bool>{}.obs;
 
-  void clearTapStatus() {
-    tapStatues.clear();
+  // set all tap status to false
+  void clearTap() {
+    tapStatues.updateAll((key, value) => false);
+  }
+
+  // set one tap status to true
+  void onTap(String key) {
+    clearTap();
+    tapStatues[key] = true;
   }
 }