refactor: Projektstruktur in app/ und backend/ aufgeteilt

app/macos/Flutter/Flutter-Debug.xcconfig

@@ -0,0 +1,2 @@
+#include? "Pods/Target Support Files/Pods-Runner/Pods-Runner.debug.xcconfig"
+#include "ephemeral/Flutter-Generated.xcconfig"

app/macos/Flutter/Flutter-Release.xcconfig

@@ -0,0 +1,2 @@
+#include? "Pods/Target Support Files/Pods-Runner/Pods-Runner.release.xcconfig"
+#include "ephemeral/Flutter-Generated.xcconfig"

app/macos/Flutter/GeneratedPluginRegistrant.swift

@@ -0,0 +1,30 @@
+//
+//  Generated file. Do not edit.
+//
+
+import FlutterMacOS
+import Foundation
+
+import file_picker
+import file_selector_macos
+import flutter_local_notifications
+import geolocator_apple
+import mobile_scanner
+import objectbox_flutter_libs
+import package_info_plus
+import path_provider_foundation
+import url_launcher_macos
+import webview_flutter_wkwebview
+
+func RegisterGeneratedPlugins(registry: FlutterPluginRegistry) {
+  FilePickerPlugin.register(with: registry.registrar(forPlugin: "FilePickerPlugin"))
+  FileSelectorPlugin.register(with: registry.registrar(forPlugin: "FileSelectorPlugin"))
+  FlutterLocalNotificationsPlugin.register(with: registry.registrar(forPlugin: "FlutterLocalNotificationsPlugin"))
+  GeolocatorPlugin.register(with: registry.registrar(forPlugin: "GeolocatorPlugin"))
+  MobileScannerPlugin.register(with: registry.registrar(forPlugin: "MobileScannerPlugin"))
+  ObjectboxFlutterLibsPlugin.register(with: registry.registrar(forPlugin: "ObjectboxFlutterLibsPlugin"))
+  FPPPackageInfoPlusPlugin.register(with: registry.registrar(forPlugin: "FPPPackageInfoPlusPlugin"))
+  PathProviderPlugin.register(with: registry.registrar(forPlugin: "PathProviderPlugin"))
+  UrlLauncherPlugin.register(with: registry.registrar(forPlugin: "UrlLauncherPlugin"))
+  WebViewFlutterPlugin.register(with: registry.registrar(forPlugin: "WebViewFlutterPlugin"))
+}