Adding support for args in publish and export commands

[renoyjohnm]

Adding support for

• --replace to publish command
• --thumbnail-username & --thumbnail-group options to publish command
• --language option in export commands

[jacalata]

Probably want a test showing that the language parameter gets through to the request.

Could also move the language code into a helper method - create an apply_csv_options method, and call it from that and the equivalent apply_png_options etc.

@staticmethod
def apply_csv_options(logger, request_options: TSC.PDFRequestOptions, args):
    DatasourcesAndWorkbooks.apply_locale_options(logger, request_options, args)