Auto-commit after successful build: update app gameplay/UI, improve build setup

Changed files:\napp/build.gradle.kts
app/src/main/AndroidManifest.xml
app/src/main/java/com/kawomi/githugandroid/GitRuntime.kt

app/src/main/AndroidManifest.xml

@@ -3,6 +3,7 @@
 
     <application
         android:allowBackup="true"
+        android:extractNativeLibs="true"
         android:fullBackupContent="@xml/backup_rules"
         android:icon="@android:drawable/sym_def_app_icon"
         android:label="@string/app_name"