Use pgstac queryextension (#306)

Author: moradology

stac_fastapi/pgstac/stac_fastapi/pgstac/app.py

@@ -3,7 +3,6 @@
 
 from stac_fastapi.api.app import StacApi
 from stac_fastapi.api.models import create_get_request_model, create_post_request_model
-from stac_fastapi.extensions import QueryExtension
 from stac_fastapi.extensions.core import (
     FieldsExtension,
     SortExtension,
@@ -13,6 +12,7 @@
 from stac_fastapi.pgstac.config import Settings
 from stac_fastapi.pgstac.core import CoreCrudClient
 from stac_fastapi.pgstac.db import close_db_connection, connect_to_db
+from stac_fastapi.pgstac.extensions import QueryExtension
 from stac_fastapi.pgstac.transactions import TransactionsClient
 from stac_fastapi.pgstac.types.search import PgstacSearch