Get second (format) instance from crossref for "online first" works

[schlawiner]

If a record has:

• a DOI
• MT= Online Medium

but does not (yet) have:

• MT2
• JBD
• JHFT
• Article Number in PAGE?

Then check crossref for:

• published-print
• issue
• volume
• page -> if not == value of field PAGE, replace with page, escpecially if PAGE starts with 1!

And create another instance in the bundle with:

• MT2/mediaCarrier "Print"
• add inVolume from volume
• add inIssue from issue
• add or pageStart and pageEnd from page
• add separate publication date for this instance (from published-print), and also add value of published-online to the first instance
• TODO: get both publication dates from crossref for all multi-instance bundles and add them to their respective instance. If none are available, copy PY to both

(eg in https://api.crossref.org/works/10.1080/01639625.2021.1990739)