Add Neon access review driver support

Register Neon as a connector provider and add a new access review
driver that fetches organization members from the Neon API with
cursor-based pagination.

Neon's OAuth is partner-gated, so the connector is API-key only
(Bearer, the default scheme). A personal or organization API key can
belong to several organizations; the operator supplies the ID of the
one to review. The members endpoint exposes per-user MFA state
(has_mfa) and deactivation, which map to the access entry MFA status
and active flag; the stable account UUID (user_id) is used as the
external ID over the membership ID.

Signed-off-by: Aurélien Sibiril <81782+aureliensibiril@users.noreply.github.com>

pkg/server/api/console/v1/connector_settings.go

@@ -172,6 +172,12 @@ func apiKeyConnectorSettings(input types.CreateAPIKeyConnectorInput) (json.RawMe
 		}
 
 		return json.Marshal(&coredata.RenderConnectorSettings{OwnerID: *input.RenderWorkspaceID})
+	case coredata.ConnectorProviderNeon:
+		if input.NeonOrganizationID == nil || *input.NeonOrganizationID == "" {
+			return nil, fmt.Errorf("cannot create neon connector: neonOrganizationId is required")
+		}
+
+		return json.Marshal(&coredata.NeonConnectorSettings{OrganizationID: *input.NeonOrganizationID})
 	}
 
 	return nil, nil