Feat/custom authentification

[jacquesfize]

Link to issue : #3111

This PR propose to enable the customization of the authentification process in GeoNature. This PR is a work in progress !

TODOLIST :

• Possibility to force the use of one provider
• Refact the ExternalGeoNatureProvider according to last changes in the Authentication class
• Deactivate the user edition in GeoNature if not logged with the localProvider
• Change the MTD sync according to changes in the new configuration schema
• clean branch history
• Transform is_uh to is_external
• Instead of declaring all module in PROVIDERS --> declare it in the identity provider configuration (imply to remove name attr of Authentication)
• configuration_schema() method to be deleted --> if validation schema needed, insert it in the configure() method
• insert_or_update_rrole -> update only attribute indicated in json
• remove unused AuthGuard
• Local provider in the config
• add test for the : AuthManager, AuthenticationClass*
• complete documentation with new functionalities
• Ajouter dans changelog
• pull dernier commit sur UH-AM

[bouttier]

Premier retour, mais je ne suis pas sûr d’avoir tous les tenant et aboutissant, ça serait sans doute plus pratique d’en discuter de vive voix !
Globalement j’ai deux remarques :

• config a laisser plutôt dans geonature.utils.config
• je serai plutôt partisan que le (ou les) provider soient la ref de module (comme dans django), pour pouvoir facilement importer du code fourni par du code externe, typiquement l’auth INPN.

[codecov]

Codecov Report

Attention: Patch coverage is 95.65217% with 1 line in your changes missing coverage. Please review.

Project coverage is 81.63%. Comparing base (911e000) to head (a2df826).
Report is 8 commits behind head on develop.

Files	Patch %	Lines
backend/geonature/core/gn_monitoring/routes.py	80.00%	1 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff             @@
##           develop    #2976      +/-   ##
===========================================
+ Coverage    78.13%   81.63%   +3.49%     
===========================================
  Files           90       85       -5     
  Lines         7346     6850     -496     
===========================================
- Hits          5740     5592     -148     
+ Misses        1606     1258     -348     

Flag	Coverage Δ
pytest	81.63% <95.65%> (+3.49%)	⬆️

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