Implement Webuntis HTTP Api and Display

lib/dataOld/outgoingPackets/talkContactsAskPacket.dart

@@ -0,0 +1,9 @@
+
+import '../outgoingPacket.dart';
+
+class TalkContactsAskPacket extends OutgoingPacket {
+  TalkContactsAskPacket() : super(
+    command: "talkContacts",
+    data: {},
+  );
+}