Install HTTPFS extension in DuckDB context

Author: ghukill

timdex_dataset_api/metadata.py

@@ -161,6 +161,14 @@ def _configure_duckdb_s3_secret(
         If a scope is provided, e.g. an S3 URI prefix like 's3://timdex', set a scope
         parameter in the config.  Else, leave it blank.
         """
+        # install httpfs extension
+        conn.execute(
+            """
+            install httpfs;
+            load httpfs;
+            """
+        )
+
         # establish scope string
         scope_str = f", scope '{scope}'" if scope else ""