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/modules/ExternalNotificationModule.h

@@ -5,6 +5,11 @@
 #include "configuration.h"
 #include "input/InputBroker.h"
 
+#ifdef HAS_RGB_LED
+#include "AmbientLightingThread.h"
+extern AmbientLightingThread *ambientLightingThread;
+#endif
+
 #if !defined(ARCH_PORTDUINO) && !defined(ARCH_STM32WL) && !defined(CONFIG_IDF_TARGET_ESP32C6)
 #include <NonBlockingRtttl.h>
 #else