Support csv import from OpenReads

[Skivling]

Is your feature request related to a problem? Please describe.
It is currently impossible to migrate to BookWyrm from OpenReads as the importer won't work with the export csv properly.

Describe the solution you'd like
A new 'data source' option, which will properly parse all fields exported by OpenReads.

Describe alternatives you've considered
Painstakingly either manually add everything, or manually re-format the csv by hand (impossible as I have >1K books)

Additional context
Github: https://github.com/mateusz-bak/openreads

[ilkka-ollakka]

Do you happen to have sample openread.csv file that you could share as test-sample?

[Skivling]

Here's the first few books of my csv: openreads-csv-example.csv

[ilkka-ollakka]

Thanks, I can try to open PR to support that during the weekend. I haven't done importers, so might take some time to get it right.