configure_input: Hook up the motion button and checkbox

This allows toggling motion on or off, and allows access to the motion configuration.
Also changes the [waiting] text for motion buttons to Shake! as this is how motion is connected to a player.

src/yuzu_tester/config.cpp

@@ -76,6 +76,7 @@ void Config::ReadValues() {
     }
 
     Settings::values.vibration_enabled = true;
+    Settings::values.motion_enabled = true;
     Settings::values.touchscreen.enabled = "";
     Settings::values.touchscreen.device = "";
     Settings::values.touchscreen.finger = 0;