V2 Extended NanoDLP_Z_Move_Sync to G4 & G28,Added all axis option.

Marlin/src/gcode/calibrate/G28.cpp

@@ -325,6 +325,15 @@ void GcodeSuite::G28(const bool always_home_all) {
   lcd_refresh();
 
   report_current_position();
+  #if ENABLED(NANODLP_Z_SYNC)
+    #if ENABLED(NANODLP_ALL_AXIS)
+      #define _HOME_SYNC true                 // For any axis, output sync text.
+    #else
+      #define _HOME_SYNC (home_all || homeZ)  // Only for Z-axis
+    #endif
+    if (_HOME_SYNC)
+      SERIAL_ECHOLNPGM(MSG_Z_MOVE_COMP);
+  #endif
 
   #if ENABLED(DEBUG_LEVELING_FEATURE)
     if (DEBUGGING(LEVELING)) SERIAL_ECHOLNPGM("<<< G28");