[TODO] improve functionality of gn api

[jeanmi151]

I would like to add few functionalities for gn_api in here : https://github.com/georchestra/geo-utils/blob/main/meta_apis/ask_gn_api.py

• add thesaurus, from file, url - started https://github.com/georchestra/geo-utils/blob/main/meta_apis/ask_gn_api.py#L96
• get thesaurus d33f33a
• delete thesaurus 901f27f and d33f33a
• get xml metadata
• update metadata
• upload file linked to metadata (thumbnail, files)
• [TODO] GN api fonctionnality link extractor #4
• export statistics from here /geonetwork/srv/fre/admin.console#/reports/ with this URL for example /geonetwork/srv/api/reports/metadataupdated?_csrf=[...]&dateFrom=2024-09-01&dateTo=2024-09-30&groups=153