set permissions on xquery files (executable via REST interface)

pre-install.xq

@@ -19,6 +19,7 @@ return (
         (: MIME type :)             (),
         (: preserve structure :)    true()
     ),
+    (collection("/db/sade-projects")/base-uri()[ends-with(., ".xq") or ends-with(., ".xql")] ! sm:chmod(., "rwxrwxr-x")),
     file:delete($dir || $fileSeparator || "sade-projects"),
 
     xmldb:store-files-from-pattern(