Add ability to write to Google spreadsheet

[mhucka]

The microPublication team requested the ability to write to a Google sheet the info about what has been uploaded.

[mhucka]

Note to self: possible starting point is csvkit, which has an interface to Google sheets. Also, pyscript in a web browser could be used to read a csv file. https://gist.github.com/ptmcg/b30b26fc806215793d1b99e81601aecb