Turn dmx_into into class with state.

This is much nicer to read and in the future more state will be added to support all the rdm stuff.

wled00/wled.cpp

@@ -67,6 +67,9 @@ void WLED::loop()
   #ifdef WLED_ENABLE_DMX
   handleDMX();
   #endif
+  #ifdef WLED_ENABLE_DMX_INPUT
+  dmxInput.update();
+  #endif
 
   #ifdef WLED_DEBUG
   unsigned long usermodMillis = millis();
@@ -527,7 +530,8 @@ void WLED::setup()
   initDMX();
 #endif
 #ifdef WLED_ENABLE_DMX_INPUT
-  initDMXInput();
+  const uint8_t dmxInputPortNumber = 2; //TODO turn into config variable?!
+  dmxInput.init(dmxInputReceivePin, dmxInputTransmitPin, dmxInputEnablePin, dmxInputPortNumber);
 #endif
 
 #ifdef WLED_ENABLE_ADALIGHT