Move M119-M121 to cpp

Marlin/src/Marlin.cpp

   return false;
 }
 
-#include "gcode/host/M119.h"
-
-#include "gcode/control/M120_M121.h"
-
 #if HAS_COLOR_LEDS
   #include "gcode/feature/leds/M150.h"
 #endif

Marlin/src/gcode/control/M120_M121.h → Marlin/src/gcode/control/M120_M121.cpp

  *
  */
 
+#include "../gcode.h"
+#include "../../module/endstops.h"
+
 /**
  * M120: Enable endstops and set non-homing endstop state to "enabled"
  */
-void gcode_M120() {
-
-  endstops.enable_globally(true);
-
-}
+void GcodeSuite::M120() { endstops.enable_globally(true); }
 
 /**
  * M121: Disable endstops and set non-homing endstop state to "disabled"
  */
-void gcode_M121() {
-
-  endstops.enable_globally(false);
-
-}
+void GcodeSuite::M121() { endstops.enable_globally(false); }

Marlin/src/gcode/gcode.cpp

 //
 // Placeholders for non-migrated codes
 //
-extern void gcode_M119();
-extern void gcode_M120();
-extern void gcode_M121();
 extern void gcode_M150();
 extern void gcode_M163();
 extern void gcode_M164();
       case 117: M117(); break;    // M117: Set LCD message text, if possible
       case 118: M118(); break;    // M118: Display a message in the host console
 
-      case 119: // M119: Report endstop states
-        gcode_M119();
-        break;
-      case 120: // M120: Enable endstops
-        gcode_M120();
-        break;
-      case 121: // M121: Disable endstops
-        gcode_M121();
-        break;
+      case 119: M119(); break;    // M119: Report endstop states
+      case 120: M120(); break;    // M120: Enable endstops
+      case 121: M121(); break;    // M121: Disable endstops
 
       #if ENABLED(ULTIPANEL)
         case 145: M145(); break;  // M145: Set material heatup parameters

Marlin/src/gcode/host/M119.h → Marlin/src/gcode/host/M119.cpp

  *
  */
 
+#include "../gcode.h"
+#include "../../module/endstops.h"
+
 /**
  * M119: Output endstop states to serial output
  */
-void gcode_M119() { endstops.M119(); }
+void GcodeSuite::M119() {
+
+  endstops.M119();
+
+}