Added option to share the app via qr-code

lib/view/pages/more/share/qrShareView.dart

@@ -0,0 +1,36 @@
+import 'package:flutter/material.dart';
+
+import 'appSharePlatformView.dart';
+
+class QrShareView extends StatefulWidget {
+  const QrShareView({super.key});
+
+  @override
+  State<QrShareView> createState() => _QrShareViewState();
+}
+
+class _QrShareViewState extends State<QrShareView> {
+  @override
+  Widget build(BuildContext context) {
+    return DefaultTabController(
+      length: 2,
+      child: Scaffold(
+        appBar: AppBar(
+          title: const Text("Teile die App"),
+          bottom: const TabBar(
+            tabs: [
+              Tab(icon: Icon(Icons.android_outlined), text: "Android"),
+              Tab(icon: Icon(Icons.apple_outlined), text: "iOS & iPadOS"),
+            ],
+          ),
+        ),
+        body: const TabBarView(
+          children: [
+            AppSharePlatformView("Für Android", "https://play.google.com/store/apps/details?id=eu.mhsl.marianum.mobile.client"),
+            AppSharePlatformView("Für iOS & iPad", "https://apps.apple.com/us/app/marianum-fulda/id6458789560"),
+          ],
+        ),
+      ),
+    );
+  }
+}