Endpoints added for enchanced fields search

[Raalsky]

Before submitting checklist

• Did you update the CHANGELOG? (not for test updates, internal changes/refactors or CI/CD setup)
• Did you ask the docs owner to review all the user-facing changes?

[codecov]

Codecov Report

Attention: Patch coverage is 78.40909% with 19 lines in your changes are missing coverage. Please review.

Project coverage is 71.97%. Comparing base (352b1ad) to head (83024ec).

Files	Patch %	Lines
...eptune/internal/backends/hosted_neptune_backend.py	17.64%	14 Missing ⚠️
.../neptune/internal/backends/neptune_backend_mock.py	50.00%	2 Missing ⚠️
...ptune/internal/backends/offline_neptune_backend.py	60.00%	2 Missing ⚠️
src/neptune/api/models.py	97.43%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1751      +/-   ##
==========================================
- Coverage   75.14%   71.97%   -3.18%     
==========================================
  Files         245      246       +1     
  Lines       13050    12933     -117     
==========================================
- Hits         9806     9308     -498     
- Misses       3244     3625     +381     

Flag	Coverage Δ
e2e	?
e2e-management	?
e2e-s3	?
e2e-s3-gcs	?
e2e-standard	?
macos	71.92% <78.40%> (-3.11%)	⬇️
py3.10	?
py3.11	?
py3.12	?
py3.7	71.97% <78.40%> (-2.49%)	⬇️
py3.7.16	?
py3.8	?
py3.9	?
ubuntu	71.92% <78.40%> (-3.16%)	⬇️
unit	71.97% <78.40%> (-0.69%)	⬇️
windows	70.67% <78.40%> (-3.00%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

[AleksanderWWW]

If there is an assumption that a Paginatable will always return an Iterator of some kind, we could make the type hint more precise. Is that correct, or we cannot guarantee that?

[Raalsky]

That was my initial try but I was struggling with it. You cannot create a Protocol with Generic at the same time and you have to provide a type var as an input if you would like to have something as an output. You can give it a try if you want.