Android: Multiple changes

- Fix game list display of NTSC-J region
 - Hook up quick load/save/reset options in emulation view.
 - Add speed limiter toggle to emulation view.
 - Add game list scanning options to main menu.
 - Add resume button (not yet hooked up to save states, it'll start the
   BIOS shell)

android/app/src/main/res/menu/menu_main.xml

@@ -2,6 +2,14 @@
     xmlns:app="http://schemas.android.com/apk/res-auto"
     xmlns:tools="http://schemas.android.com/tools"
     tools:context="com.github.stenzek.duckstation.MainActivity" >
+    <group android:id="@+id/game_list">
+        <item android:id="@+id/action_add_game_directory"
+            android:title="Add Game Directory" />
+        <item android:id="@+id/action_scan_for_new_games"
+            android:title="Scan For New Games" />
+        <item android:id="@+id/action_rescan_all_games"
+            android:title="Rescan All Games" />
+    </group>
     <item android:id="@+id/action_settings"
         android:title="@string/action_settings"
         android:orderInCategory="100"