Add autotemp capabilities to M104

This allows M104 to pass the F and B parameters to enable autotemp as well

Marlin/Marlin_main.cpp

 
     if (code_value_temp_abs() > thermalManager.degHotend(target_extruder)) LCD_MESSAGEPGM(MSG_HEATING);
   }
+  
+  #if ENABLED(AUTOTEMP)
+    planner.autotemp_M104_M109();
+  #endif
 }
 
 #if HAS_TEMP_HOTEND || HAS_TEMP_BED
   }
 
   #if ENABLED(AUTOTEMP)
-    planner.autotemp_M109();
+    planner.autotemp_M104_M109();
   #endif
 
   #if TEMP_RESIDENCY_TIME > 0

Marlin/planner.cpp

 
 #if ENABLED(AUTOTEMP)
 
-  void Planner::autotemp_M109() {
+  void Planner::autotemp_M104_M109() {
     autotemp_enabled = code_seen('F');
     if (autotemp_enabled) autotemp_factor = code_value_temp_diff();
     if (code_seen('S')) autotemp_min = code_value_temp_abs();
     SERIAL_EOL;
   }
 
-#endif
+#endif

Marlin/planner.h

       static float autotemp_factor;
       static bool autotemp_enabled;
       static void getHighESpeed();
-      static void autotemp_M109();
+      static void autotemp_M104_M109();
     #endif
 
   private: