Encapsulate common display code in a singleton (#12395)

* Encapsulate common LCD code in a singleton
* Depend more UBL code on UBL_DEVEL_DEBUGGING
  - Since most users don't need the debugging on at all times, this helps reduce the default build size for UBL by over 2K, a little closer to fitting on 128K boards.

Marlin/src/gcode/control/M80_M81.cpp

@@ -83,7 +83,7 @@
     #endif
 
     #if HAS_LCD_MENU
-      lcd_reset_status();
+      ui.reset_status();
     #endif
   }