Move M117 to cpp

Marlin/src/Marlin.cpp

   return false;
 }
 
-#include "gcode/lcd/M117.h"
-
 #include "gcode/host/M118.h"
 #include "gcode/host/M119.h"
 

Marlin/src/gcode/gcode.cpp

 //
 // Placeholders for non-migrated codes
 //
-extern void gcode_M117();
 extern void gcode_M118();
 extern void gcode_M119();
 extern void gcode_M120();
 
       case 115: M115(); break;    // M115: Report capabilities
 
-      case 117: // M117: Set LCD message text, if possible
-        gcode_M117();
-        break;
+      case 117: M117(); break;    // M117: Set LCD message text, if possible
       case 118: // M118: Display a message in the host console
         gcode_M118();
         break;

Marlin/src/gcode/lcd/M117.h → Marlin/src/gcode/lcd/M117.cpp

  *
  */
 
+#include "../gcode.h"
+#include "../../lcd/ultralcd.h"
+
 /**
  * M117: Set LCD Status Message
  */
-void gcode_M117() {
+void GcodeSuite::M117() {
 
   lcd_setstatus(parser.string_arg);