chore: scaffold KMP (wizard JetBrains) avec cible jvm et wiring filesDirPath

README.MD

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+# Livrets
+
+### Android
+To run the application on android device/emulator:  
+ - open project in Android Studio and run imported android run configuration  
+
+To build the application bundle:  
+ - run `./gradlew :androidApp:assembleDebug`  
+ - find `.apk` file in `androidApp/build/outputs/apk/debug/androidApp-debug.apk`  
+
+### iOS
+To run the application on iPhone device/simulator:  
+ - Open `iosApp/iosApp.xcproject` in Xcode and run standard configuration  
+ - Or use [Kotlin Multiplatform Mobile plugin](https://plugins.jetbrains.com/plugin/14936-kotlin-multiplatform-mobile) for Android Studio  
+