ExternalNotification and StatusLED now call AmbientLighting to update… (#9554)

* ExternalNotification and StatusLED now call AmbientLighting to update RGB LEDs. Add optional heartbeat

* Don't overwrite RGB state if heartbeat is disabled.

* Use the right define

* Remove another .h and make rgb static

* move rgb objects into AmbientLighting class

* Straighten out AmbientLighting Thread object

* Use %f for floats

src/graphics/NeoPixel.h

@@ -1,4 +0,0 @@
-#ifdef HAS_NEOPIXEL
-#include <Adafruit_NeoPixel.h>
-extern Adafruit_NeoPixel pixels;
-#endif

src/graphics/RAKled.h

@@ -1,5 +0,0 @@
-#ifdef HAS_NCP5623
-#include <NCP5623.h>
-extern NCP5623 rgb;
-
-#endif