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/EVisionKeyboardController/RGBController_EVisionKeyboard.cpp

@@ -24,7 +24,7 @@ static unsigned int matrix_map[6][23] =
     @name EVision Keyboard
     @category Keyboard
     @type USB
-    @save :warning:
+    @save :robot:
     @direct :x:
     @effects :white_check_mark:
     @detectors DetectEVisionKeyboards