✨(anct) fetch and display organization names of communes

ANCT-specific extraction of organization names for communes, front
end changes to match.

src/backend/people/settings.py

@@ -641,6 +641,8 @@ class Development(Base):
 
     OIDC_ORGANIZATION_REGISTRATION_ID_FIELD = "siret"
 
+    ORGANIZATION_PLUGINS = ["plugins.organizations.NameFromSiretOrganizationPlugin"]
+
     def __init__(self):
         """In dev, force installs needed for Swagger API."""
         # pylint: disable=invalid-name
@@ -686,6 +688,10 @@ class Test(Base):
     # this is a dev credentials for mail provisioning API
     MAIL_PROVISIONING_API_CREDENTIALS = "bGFfcmVnaWU6cGFzc3dvcmQ="
 
+    OIDC_ORGANIZATION_REGISTRATION_ID_FIELD = "siret"
+
+    ORGANIZATION_PLUGINS = ["plugins.organizations.NameFromSiretOrganizationPlugin"]
+
     ORGANIZATION_REGISTRATION_ID_VALIDATORS = [
         {
             "NAME": "django.core.validators.RegexValidator",