Sc-im is lacking non-interactive export to xlsx command option.

[earthshrink]

Sc-im currently supports command line options
--export_csv
--export_tab
--export_mkd
--export_txt
and just
--export
to export to these formats, to be used with
--quit_afterload
and
--nocurses
options for non-interactive use.

A corresponding --export_xlsx option is missing,
which is a pity since .xlsx is the only format that supports export and import of multiple sheets.

Also, this would allow integrating with tools like python to perform complementary functions, like report generation or interacting with a database, etc., and foster a larger ecosystem.