Android: Show screenshot on EmulationActivity before game starts.

Source/Android/app/src/main/res/layout/activity_emulation.xml

@@ -1,5 +1,16 @@
 <FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
              android:layout_width="match_parent"
              android:layout_height="match_parent"
-             android:id="@+id/frame_content">
+    >
+
+    <ImageView
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:id="@+id/image_screenshot"/>
+
+    <FrameLayout
+        android:id="@+id/frame_content"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:visibility="gone"/>
 </FrameLayout>