[Feature request] Bibtex_2academic_plus using related items

[kevinpolisano]

As I mentioned here:

Your great solution written in R bibtex_2academic_plus.R supports front matter options via the extras field in Zotero. However, I think we can improve on this solution. The current method requires manually filling these extras fields, while it is possible to automate the process without using the extras field by utilizing the related items field instead. In Zotero, one can create a folder called for instance academic-publications containing various items such as journal articles, conference papers, codes, slides, posters, and presentation videos, all of which can be linked to a specific article entry via the related items field. Currently, these related items are not yet exported with Better BibTeX in the generated .bib file. However, related items are exported with BetterBibtex JSON. This means it is technically possible to extract the type (e.g., slides, poster, video) and corresponding URL for each related item to fill the front matter options url_{slides,poster,video} in the generated .md files. Additionally, it would be also possible to automatically extract the PDF files associated with these items (e.g., article PDFs, slides, posters) and put them in the local folder uploads/ in order to produce a "self-contained" website.