Move M108, M112, M410 to cpp

Marlin/src/gcode/gcode.h

@@ -466,6 +466,8 @@ private:
 
   #if DISABLED(EMERGENCY_PARSER)
     static void M108();
+    static void M112();
+    static void M410();
   #endif
 
   static void M109();
@@ -473,10 +475,6 @@ private:
   static void M110();
   static void M111();
 
-  #if DISABLED(EMERGENCY_PARSER)
-    static void M112();
-  #endif
-
   #if ENABLED(HOST_KEEPALIVE_FEATURE)
     static void M113();
   #endif
@@ -638,10 +636,6 @@ private:
     static void M407();
   #endif
 
-  #if DISABLED(EMERGENCY_PARSER)
-    static void M410();
-  #endif
-
   #if HAS_LEVELING
     static void M420();
     static void M421();