Adding Legend to Suported Devices

+ Adding 🤖 symbol for Automatic saving
+ Changing ⚠️ to 🚨 for better visibility
+ Adding :tools: symbol to mean `partial support`
+ Adding ⭕ symbol to mean not currently implemented by OpenRGB

Controllers/LogitechController/RGBController_LogitechGProKeyboard.cpp

@@ -147,7 +147,7 @@ static const led_type led_names[] =
     @name Logitech G Pro
     @category Keyboard
     @type USB
-    @save :warning:
+    @save :robot:
     @direct :white_check_mark:
     @effects :white_check_mark:
     @detectors DetectLogitechKeyboardGPro