[client] Add importFiles in artifacts

Author: Samuel Hassine

pycti/connector/opencti_connector_helper.py

@@ -148,7 +148,6 @@ def _data_handler(self, json_data):
             )
             message = self.callback(json_data["event"])
             self.helper.api.work.to_processed(work_id, message)
-
         except Exception as e:
             logging.exception("Error in message processing, reporting error to API")
             try:

pycti/entities/opencti_stix_cyber_observable.py

@@ -135,9 +135,18 @@ def __init__(self, opencti, file):
                 encryption_algorithm
                 decryption_key
                 hashes {
-                  algorithm
-                  hash
-                }           
+                    algorithm
+                    hash
+                }
+                importFiles {
+                    edges {
+                        node {
+                            id
+                            name
+                            size
+                        }
+                    }
+                }                
             }        
             ... on StixFile {
                 extensions