[Android] Implement support for real Wiimotes with the DolphinBar

This is the only way to get Wiimotes working under Android now.
This, just like the Wii U Gamecube Controller Adapter, completely goes around Android's limitations and talks with the device directly through USBManager.

Couple notes.
Continuous scanning must be enabled otherwise the Wiimotes won't be seen.
The UI doesn't expose support for this yet. One must change the Wiimote source and continuous scanning settings manually.

Testing up to two wiimotes in Taiko No Tatsujin, no reason to believe all four won't work.

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

@@ -59,6 +59,11 @@
                 android:text="@string/settings"
                 style="@style/InGameMenuOption"/>
 
+            <Button
+                android:id="@+id/menu_refresh_wiimotes"
+                android:text="@string/emulation_refresh_wiimotes"
+                style="@style/InGameMenuOption"/>
+
             <Button
                 android:id="@+id/menu_exit"
                 android:text="@string/overlay_exit_emulation"

Source/Android/app/src/main/res/values/strings.xml

@@ -346,6 +346,7 @@
     <string name="emulation_toggle_input">Toggle Touch Controls</string>
     <string name="emulation_quicksave">Quick Save</string>
     <string name="emulation_quickload">Quick Load</string>
+    <string name="emulation_refresh_wiimotes">Refresh Wiimotes</string>
     
     <!-- GC Adapter Menu-->
     <string name="gc_adapter_rumble">Enable Vibration</string>