NEW: support language of japanese

update po files for BambuStudio

Change-Id: I6783fe831d05a19eb7fce6f8b24ee7949d1ed86b
Signed-off-by: Stone Li <stone.li@bambulab.com>

src/slic3r/GUI/Preferences.cpp

@@ -790,7 +790,9 @@ wxWindow* PreferencesDialog::create_general_page()
         wxLANGUAGE_SPANISH,
         wxLANGUAGE_SWEDISH,
         wxLANGUAGE_DUTCH,
-        wxLANGUAGE_HUNGARIAN };
+        wxLANGUAGE_HUNGARIAN,
+        wxLANGUAGE_JAPANESE
+    };
 
     auto translations = wxTranslations::Get()->GetAvailableTranslations(SLIC3R_APP_KEY);
     std::vector<const wxLanguageInfo *> language_infos;