+ Add translation support for backend by passing selected language in request header.

+ Add a new translation middleware.
+ Translated all /api/v1/system/* modules.
+ Translated /api/v1/autocode/auto_code_example.go
+ Increasing server timeout from 20 sec to 30 sec.
+ Fix Chinese translation for confirmation button.
+ Add selected language option to user store.

web/src/utils/request.js

@@ -40,6 +40,7 @@ service.interceptors.request.use(
       'Content-Type': 'application/json',
       'x-token': userStore.token,
       'x-user-id': userStore.userInfo.ID,
+      'Accept-Language': userStore.language, // added by mohame hassan to allow store selected language for multilanguage support.
       ...config.headers
     }
     return config