Implement signing feature

Author: AlaaElattar

app/lib/apps/sign/sign.dart

@@ -0,0 +1,42 @@
+import 'package:flutter/material.dart';
+import 'package:threebotlogin/app.dart';
+import 'package:threebotlogin/apps/farmers/farmers_user_data.dart';
+import 'package:threebotlogin/events/events.dart';
+import 'package:threebotlogin/events/go_home_event.dart';
+import 'package:threebotlogin/screens/signing/signing.dart';
+
+class Sign implements App {
+  static final Sign _singleton = Sign._internal();
+  static const Widget _signWidget = Signing();
+
+  factory Sign() {
+    return _singleton;
+  }
+
+  Sign._internal();
+
+  @override
+  Future<Widget> widget() async {
+    return _signWidget;
+  }
+
+  @override
+  void clearData() {
+    clearAllData();
+  }
+
+  @override
+  bool emailVerificationRequired() {
+    return false;
+  }
+
+  @override
+  bool pinRequired() {
+    return false;
+  }
+
+  @override
+  void back() {
+    Events().emit(GoHomeEvent());
+  }
+}

app/lib/jrouter.dart

@@ -9,6 +9,7 @@ import 'package:threebotlogin/screens/registered_screen.dart';
 
 import 'apps/farmers/farmers.dart';
 import 'apps/news/news.dart';
+import 'apps/sign/sign.dart';
 
 class AppInfo {
   Route route;
@@ -86,6 +87,14 @@ class JRouter {
             view: await Council().widget(),
           ),
           app: Dao()),
+      AppInfo(
+          route: Route(
+            path: '/sign',
+            name: 'Sign',
+            icon: Icons.handshake,
+            view: await Sign().widget(),
+          ),
+          app: Dao()),
     ];
   }