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/stats/M31.cpp

@@ -40,7 +40,7 @@ void GcodeSuite::M31() {
   char buffer[21];
   duration_t elapsed = print_job_timer.duration();
   elapsed.toString(buffer);
-  lcd_setstatus(buffer);
+  ui.setstatus(buffer);
 
   SERIAL_ECHO_START_P(port);
   SERIAL_ECHOLNPAIR_P(port, "Print time: ", buffer);