[IMP] pms-api-rest: add userFirstName to login service

pms_api_rest/services/pms_login_service.py

@@ -73,6 +73,7 @@ class PmsLoginService(Component):
             expirationDate=timestamp_expire_in_a_min,
             userId=user_record.id,
             userName=user_record.name,
+            userFirstName=user_record.firstname,
             userEmail=user_record.email if user_record.email else None,
             userPhone=user_record.phone if user_record.phone else None,
             defaultPropertyId=user_record.pms_property_id.id,