Rename the following functionalities:
    
        - From `Commons/cli_getCountryCodes' to
          `Locale/locale_getCountryCodes'
    
        - From `Commons/cli_getLangName' to `Locale/locale_getLanguageName'
    
        - From `Commons/cli_getLangCodes' to
          `Locale/locale_getLanguageCodes'
    
        - From `Commons/cli_getCountryName' to
          `Locale/locale_getCountryName'
    
    Add the following functionalities:
    
        - Locale/locale_getCurrentCountryCode
    
        - Locale/locale_getCurrentLanguageCode