fix(plugins:getstream): Support setting user avatars (#233)

Author: m0reA1

plugins/getstream/vision_agents/plugins/getstream/stream_edge_transport.py

@@ -267,7 +267,7 @@ async def create_conversation(self, call: Call, user, instructions):
 
     async def create_user(self, user: User):
         self.agent_user_id = user.id
-        return await self.client.create_user(name=user.name, id=user.id)
+        return await self.client.create_user(name=user.name, id=user.id, image=user.image)
 
     async def join(self, agent: "Agent", call: Call) -> StreamConnection:
         """