Mobile app initial implementation.

Closes #3 (closed)

android/app/src/main/res/values/styles.xml

@@ -5,4 +5,13 @@
              Flutter draws its first frame -->
         <item name="android:windowBackground">@drawable/launch_background</item>
     </style>
+
+    <style name="Theme.AppCompat.Translucent" parent="@style/Theme.AppCompat.NoActionBar">
+        <item name="android:windowNoTitle">true</item>
+        <item name="android:windowBackground">@android:color/transparent</item>
+        <item name="android:colorBackgroundCacheHint">@null</item>
+        <item name="android:windowIsTranslucent">true</item>
+        <item name="android:windowAnimationStyle">@android:style/Animation</item>
+        <item name="android:statusBarColor">@android:color/transparent</item>
+    </style>
 </resources>