Update XBRL extraction to handle multiple taxonomies per year

[jdangerx]

Overview

Once catalyst-cooperative/pudl-archiver#349 is done, we have to actually use all that fancy metadata to extract the filings correctly!

Success criteria

• [ ] filings extracted using the correct taxonomies
• [ ] all FERC 1 transforms execute without errors, though they probably don't pass validation checks.

### Next steps
* [ ] read taxonomy and filename from the metadata
* [ ] chunk extraction based on which taxonomy is being used