doi extraction for linking to external databases

[shauryr]

Adds doi field from grobid extraction to the references.json. For most papers this can be used to link to other databases mentioned in #140

[codecov]

Codecov Report

Merging #338 (bb76cb7) into main (adc02a8) will increase coverage by 0.00%.
The diff coverage is 100.00%.

@@           Coverage Diff           @@
##             main     #338   +/-   ##
=======================================
  Coverage   86.35%   86.35%           
=======================================
  Files         150      150           
  Lines        8487     8488    +1     
  Branches      957      957           
=======================================
+ Hits         7329     7330    +1     
  Misses       1147     1147           
  Partials       11       11           

Files Changed	Coverage Δ
python/sidecar/ingest.py	90.37% <ø> (ø)
python/sidecar/typing.py	97.26% <100.00%> (+0.01%)	⬆️

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[gjreda]

@shauryr Is this coming from grobid?

Can you also create a corresponding issue so that this is added to the UI as well? I imagine we'll want to make this field editable by the user in situations where we do not have the DOI, but the user would like to provide it.

[shauryr]

@gjreda yes this is coming from grobid.
Making the doi editable is a great suggestion! I will create an issue regarding this. Thank you!