Fix DUAL_X_CARRIAGE manual moves, add T0/T1 menu item

Marlin/src/lcd/ultralcd.cpp

@@ -2750,9 +2750,13 @@ void kill_screen(const char* lcd_msg) {
       , int8_t eindex=-1
     #endif
   ) {
-    #if E_MANUAL > 1
-      if (axis == E_AXIS) manual_move_e_index = eindex >= 0 ? eindex : active_extruder;
+    #if ENABLED(DUAL_X_CARRIAGE) || E_MANUAL > 1
+      #if E_MANUAL > 1
+        if (axis == E_AXIS)
+      #endif
+          manual_move_e_index = eindex >= 0 ? eindex : active_extruder;
     #endif
+
     manual_move_start_time = millis() + (move_menu_scale < 0.99 ? 0UL : 250UL); // delay for bigger moves
     manual_move_axis = (int8_t)axis;
   }
@@ -2963,7 +2967,7 @@ void kill_screen(const char* lcd_msg) {
     else
       MENU_ITEM(gcode, MSG_AUTO_HOME, PSTR("G28"));
 
-    #if ENABLED(SWITCHING_EXTRUDER)
+    #if ENABLED(SWITCHING_EXTRUDER) || ENABLED(DUAL_X_CARRIAGE)
       if (active_extruder)
         MENU_ITEM(gcode, MSG_SELECT " " MSG_E1, PSTR("T0"));
       else