adding WLED_DISABLE_ADALIGHT (issue #3128

This flag disables reading commands from serial interface (RX = gpio 3)

Add -D WLED_DISABLE_ADALIGHT to your custom pio build environment.

wled00/wled.h

@@ -30,7 +30,11 @@
 #ifndef WLED_DISABLE_MQTT
   #define WLED_ENABLE_MQTT         // saves 12kb
 #endif
-#define WLED_ENABLE_ADALIGHT       // saves 500b only (uses GPIO3 (RX) for serial)
+#ifndef WLED_DISABLE_ADALIGHT      // can be used to disable reading commands from serial RX pin (see issue #3128). 
+  #define WLED_ENABLE_ADALIGHT     // disable saves 5Kb (uses GPIO3 (RX) for serial). Related serial protocols: APALIGHT/TPM2, IMPROV, Continuous Serial Streaming 
+#else
+  #undef WLED_ENABLE_ADALIGHT      // disable has priority over enable
+#endif
 //#define WLED_ENABLE_DMX          // uses 3.5kb (use LEDPIN other than 2)
 //#define WLED_ENABLE_JSONLIVE     // peek LED output via /json/live (WS binary peek is always enabled)
 #ifndef WLED_DISABLE_LOXONE