feat: add header to query builder

Author: Joel Lee

Diff for: supabase/lib/query_builder.py

@@ -29,6 +29,9 @@ def _execute_monkey_patch(self) -> Dict[str, Any]:
     url: str = str(self.session.base_url).rstrip("/")
     query: str = str(self.session.params)
     response = func(f"{url}?{query}", headers=self.session.headers, **additional_kwargs)
+    import pdb
+
+    pdb.set_trace()
     return {
         "data": response.json(),
         "status_code": response.status_code,
@@ -68,6 +71,7 @@ def __init__(self, url, headers, schema, realtime, table):
             "Content-Type": "application/json",
             "Accept-Profile": schema,
             "Content-Profile": schema,
+            "Prefer": "return=representation",
             **headers,
         }
         self.session = AsyncClient(base_url=url, headers=headers)