add instance information to webhooks (#577)

Fixes #574

src/pytypes/extra/generate-docs.py

@@ -216,6 +216,8 @@ def main():
         event_id=UUID(int=0),
         event_type=EventType.ping,
         event=EventPing(ping_id=UUID(int=0)),
+        instance_id=UUID(int=0),
+        instance_name="example",
     )
 
     layer(

src/pytypes/onefuzztypes/events.py

@@ -226,3 +226,5 @@ class EventMessage(BaseEvent):
     event_id: UUID = Field(default_factory=uuid4)
     event_type: EventType
     event: Event
+    instance_id: UUID
+    instance_name: str