Move M150 to cpp

Marlin/src/Marlin.cpp

   return false;
 }
 
-#if HAS_COLOR_LEDS
-  #include "gcode/feature/leds/M150.h"
-#endif
-
 #include "gcode/config/M201.h"
 
 #if 0 // Not used for Sprinter/grbl gen6

Marlin/src/gcode/feature/leds/M150.h → Marlin/src/gcode/feature/leds/M150.cpp

  *
  */
 
+#include "../../../inc/MarlinConfig.h"
+
+#if HAS_COLOR_LEDS
+
+#include "../../gcode.h"
+#include "../../../feature/leds/leds.h"
+
 /**
  * M150: Set Status LED Color - Use R-U-B-W for R-G-B-W
  *
  *   M150 W          ; Turn LED white using a white LED
  *
  */
-void gcode_M150() {
+void GcodeSuite::M150() {
   set_led_color(
     parser.seen('R') ? (parser.has_value() ? parser.value_byte() : 255) : 0,
     parser.seen('U') ? (parser.has_value() ? parser.value_byte() : 255) : 0,
     #endif
   );
 }
+
+#endif // HAS_COLOR_LEDS

Marlin/src/gcode/gcode.cpp

 //
 // Placeholders for non-migrated codes
 //
-extern void gcode_M150();
 extern void gcode_M163();
 extern void gcode_M164();
 extern void gcode_M165();
       #endif
 
       #if HAS_COLOR_LEDS
-
-        case 150: // M150: Set Status LED Color
-          gcode_M150();
-          break;
-
-      #endif // HAS_COLOR_LEDS
+        case 150: M150(); break;  // M150: Set Status LED Color
+      #endif
 
       #if ENABLED(MIXING_EXTRUDER)
         case 163: // M163: Set a component weight for mixing extruder