add crawl_google_scholar_citation.py (#3879)

* add crawl_google_scholar_citation.py

* pass flack8

* pass isort

* pass isort

* change comment in main

* modify main code

* delete file

* change how to build url

* add a key 'hl' in params dict

* Update crawl_google_scholar_citation.py

* Create crawl_google_results.py

* codespell: Mater

Co-authored-by: Christian Clauss <cclauss@me.com>