new: [entities] show attribute and object count in Event entity metadata

src/MISP_maltego/transforms/common/entities.py

@@ -32,6 +32,8 @@ class MISPEvent(Entity):
     # threat_level = EnumEntityField('type.enum', choices=['Undefined', 'Low', 'Medium', 'High'], display_name='Threat Level')
     # analysis = EnumEntityField('type.enum', choices=['Initial', 'Ongoing', 'Completed'])
     # org = StringEntityField('type.str', display_name='Organisation')
+    count_attributes = IntegerEntityField('count_attributes', display_name="# attributes", matching_rule=MatchingRule.Loose)
+    count_objects = IntegerEntityField('count_objects', display_name="# objects", matching_rule=MatchingRule.Loose)
 
 
 class MISPObject(Entity):

src/MISP_maltego/transforms/common/util.py

@@ -341,6 +341,8 @@ def event_to_entity(e, link_style=LinkStyle.Normal, link_direction=LinkDirection
         info=e['Event']['info'],
         link_style=link_style,
         link_direction=link_direction,
+        count_attributes=len(e['Event'].get('Attribute')),
+        count_objects=len(e['Event'].get('Object')),
         notes=notes,
         bookmark=Bookmark.Green)