update app

exercise03_android/.gitignore

exercise03_android/.idea/.gitignore

exercise03_android/.idea/.name

exercise03_android/.idea/codeStyles/Project.xml

exercise03_android/.idea/codeStyles/codeStyleConfig.xml

exercise03_android/.idea/compiler.xml

exercise03_android/.idea/gradle.xml

exercise03_android/.idea/misc.xml

exercise03_android/app/.gitignore

exercise03_android/app/build.gradle

exercise03_android/app/proguard-rules.pro

...st/java/com/example/diceroller/ExampleInstrumentedTest.kt

exercise03_android/app/src/main/AndroidManifest.xml

.../app/src/main/java/com/example/diceroller/MainActivity.kt

.../app/src/main/res/drawable-v24/ic_launcher_foreground.xml

...roid/app/src/main/res/drawable/ic_launcher_background.xml

exercise03_android/app/src/main/res/layout/activity_main.xml

...ndroid/app/src/main/res/mipmap-anydpi-v26/ic_launcher.xml

.../app/src/main/res/mipmap-anydpi-v26/ic_launcher_round.xml

...e03_android/app/src/main/res/mipmap-hdpi/ic_launcher.webp