refactor: Projektstruktur in app/ und backend/ aufgeteilt

app/macos/Runner/Configs/Version.xcconfig

@@ -0,0 +1,12 @@
+//
+// Version.xcconfig
+// Configuration for app versioning to fix DVTDeviceOperation build number issues
+//
+
+// Set marketing version and current project version from Flutter build variables
+MARKETING_VERSION = $(FLUTTER_BUILD_NAME:1.0.0)
+CURRENT_PROJECT_VERSION = $(FLUTTER_BUILD_NUMBER:1)
+
+// Ensure build number is never empty
+FLUTTER_BUILD_NAME = $(inherited:1.0.0)
+FLUTTER_BUILD_NUMBER = $(inherited:1)