✨ EasyThreeD ET4000+ board and UI (#23080)

Co-authored-by: Scott Lahteine <thinkyhead@users.noreply.github.com>

Marlin/src/MarlinCore.cpp

@@ -248,6 +248,10 @@
   #include "feature/power.h"
 #endif
 
+#if ENABLED(EASYTHREED_UI)
+  #include "feature/easythreed_ui.h"
+#endif
+
 PGMSTR(M112_KILL_STR, "M112 Shutdown");
 
 MarlinState marlin_state = MF_INITIALIZING;
@@ -637,6 +641,8 @@ inline void manage_inactivity(const bool no_stepper_sleep=false) {
     #endif
   #endif
 
+  TERN_(EASYTHREED_UI, easythreed_ui.run());
+
   TERN_(USE_CONTROLLER_FAN, controllerFan.update()); // Check if fan should be turned on to cool stepper drivers down
 
   TERN_(AUTO_POWER_CONTROL, powerManager.check(!ui.on_status_screen() || printJobOngoing() || printingIsPaused()));
@@ -1606,6 +1612,10 @@ void setup() {
     SETUP_RUN(ui.check_touch_calibration());
   #endif
 
+  #if ENABLED(EASYTHREED_UI)
+    SETUP_RUN(easythreed_ui.init());
+  #endif
+
   marlin_state = MF_RUNNING;
 
   SETUP_LOG("setup() completed.");