Avoid URL parsing when deserializing wheels

[charliermarsh]

Summary

This PR slots in UrlString for WheelWire, which IIUC should avoid parsing URLs during deserialization?

[charliermarsh]

If we want, I see a path to skipping URL parsing entirely except for those distributions that we attempt to install / query.

[ibraheemdev]

If we want, I see a path to skipping URL parsing entirely except for those distributions that we attempt to install / query.

This would just mean using UrlString in more places, right?

[charliermarsh]

This would just mean using UrlString in more places, right?

I think we would change File::try_from to not parse at all and instead store the raw string (this could be UrlString, but we'd need to change UrlString so that it's not guaranteed to be a valid URL). Make UrlString::to_url a Result and add appropriate error handling.

[charliermarsh]

I can give it a try at some point, but let me know if you beat me to it.