l1-s12 add android specific hello world

Author: Alex009

android-app/src/main/java/com/icerockdev/android_app/MainActivity.kt

@@ -9,7 +9,8 @@ class MainActivity : AppCompatActivity() {
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
         setContentView(R.layout.activity_main)
-        
+
         HelloWorld.print()
+        AndroidHelloWorld.print()
     }
 }

mpp-library/src/androidMain/kotlin/AndroidHelloWorld.kt

@@ -0,0 +1,11 @@
+/*
+ * Copyright 2019 IceRock MAG Inc. Use of this source code is governed by the Apache 2.0 license.
+ */
+
+import android.util.Log
+
+object AndroidHelloWorld {
+    fun print() {
+        Log.v("MPP", "hello android world")
+    }
+}