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/NZXTHue2Controller/RGBController_NZXTHue2.cpp

@@ -12,7 +12,7 @@
     @name NZXT Hue2
     @category LEDStrip
     @type USB
-    @save :warning:
+    @save :robot:
     @direct :white_check_mark:
     @effects :white_check_mark:
     @detectors DetectNZXTHue2,DetectNZXTHue2Ambient,DetectNZXTHue2Motherboard,DetectNZXTSmartDeviceV2,DetectNZXTKrakenX3,DetectNZXTFanController