Updates to addressable LED (#2098)

Only PWM Headers are supported, so enforce that.

Also fixes some init checks and init order checks.

hal/src/main/native/sim/HAL.cpp

@@ -207,6 +207,8 @@ const char* HAL_GetErrorMessage(int32_t code) {
       return HAL_SIM_NOT_SUPPORTED_MESSAGE;
     case HAL_CAN_BUFFER_OVERRUN:
       return HAL_CAN_BUFFER_OVERRUN_MESSAGE;
+    case HAL_LED_CHANNEL_ERROR:
+      return HAL_LED_CHANNEL_ERROR_MESSAGE;
     default:
       return "Unknown error status";
   }