fix the classficiations retrieval

add classification codes when retrieving patent data

Implement arXiv backend

Make scrapping async

Update README.md

Update project doc

Add scholar endpoint + rework

Remove useless endpoint

Reorganize endpoints

Extract field, background and description

Deploy scrap endpoints

fix gpatent query

Fix log format

Fix backend status endpoint returning state linfo

Add bing search backend

Add search_duck + search route

Fix search_patents route not respecting number of results per query

Fix wrong python executbale

Initial commit

initial commit