BL Image coordinates

[ehoelzl]

The British Library importer has been merged, but is still missing the image coordinates as the data we currently have does not contain any image content item.

[e-maud]

Update impresso 2: testing this part of the code should be possible with upcoming new BL samples; request ongoing.

[piconti]

Some work on this was started at the end od 2023.
With the new BL data which has arrived, it will now be necessary to fix the image handling in the BL data.

This work needs to be resumed and the importer finalized.

Action points are:

• recover the email exchanges with BL and see where the 2023 work stopped.
• Adapt the current importer to handle the image CIs
• Comment code
• Document and merge