Implement Webuntis HTTP Api and Display

lib/dataOld/incommingPackets/authenticatePacket.dart

@@ -0,0 +1,20 @@
+
+import 'dart:developer';
+
+import 'package:shared_preferences/shared_preferences.dart';
+
+import '../incomingPacket.dart';
+
+class AuthenticatePacket extends IncomingPacket {
+  AuthenticatePacket() : super("authenticate");
+
+  @override
+  void handle(data) {
+    SharedPreferences.getInstance().then((value) => {
+      invoke(data: {
+        'username': value.getString("username"),
+        'password': value.getString("password")
+      })
+    });
+  }
+}