Add flag to ignore `index.html` resolution in gateway

At the moment, if I want to do a directory listing using an HTTP request to a gateway, I cannot do anything if there is an index.html file inside a given path.

It would be nice to be able to specify a flag in the querystring (eg, ?noResolve) to skip the resolution of index.html and to do a regular directory read.

This is something I've played with a bit in js-ipfs-fetch using a custom header, but that doesn't play well with CORS and I've since learned that querystrings are much more reliable/ usable (in hypercore-fetch).

Is this something that could be considered for addition?