ENH:support u0 firmware homing

jira:[none]

Change-Id: I9533944c343007897d25929739e5eb175bad6689
(cherry picked from commit 533911e2cd46fadc92bd7d908e81ad51ce14944c)

src/slic3r/GUI/DeviceManager.hpp

@@ -869,6 +869,7 @@ public:
     bool is_support_filament_setting_inprinting{false};
     bool is_support_agora{false};
     bool is_support_upgrade_kit{false};
+    bool is_support_command_homing { false };// fun[32]
 
     bool installed_upgrade_kit{false};
     int  nozzle_max_temperature = -1;