Support for a11y exemptions #177
Description
With the addition of exemptions in RWPM, we also need to add similar support in all of our toolkits.
We need to be able to:
- parse this metadata when present in an EPUB, based on https://www.w3.org/TR/epub-a11y-exemption/
- add it to the metadata supported by our model
- and output it in RWPM