implement the WPDV4 class as a pydantic model mapping the WPD schema with additional conveninence methods to faciliate use and storage and sharing of digitized data.
- Read the weplot digitizer tar and json format (from_tar, from_json)
- Make data readily available in python (to_table)
- Save data back into wpd format (may be usefull in the future to provide a standard format to share figure and data at the same time)
- Collect archive of digitized rheological data and test if this is a good way to collect and share digitized data