feat: add postgresql storage

Author: zdm

lib/app/components/storage/storage.js

@@ -391,7 +391,7 @@ export default class Storage {
             if ( cacheControl ) headers[ "cache-control" ] = cacheControl;
             if ( contentDisposition ) headers[ "content-disposition" ] = contentDisposition;
 
-            return bucket.downloadFile( req, file, headers );
+            return bucket.downloadFile( req, file, headers, { dbh } );
         }
     }