feat: use new URL instead of url.parse

[bjohansebas]

Summary

An important change, IPv6 hostnames now return with square brackets ([]) (for new URL()), so they need to be formatted for ipaddr to correctly validate whether it’s an IPv6 URL. Additionally, the hostname also needs to be formatted in the IPv6 case, because right now, when an IPv6 hostname is passed in host, users are not including the square brackets. We could change this behavior, what do you think?

Also, it seems this will make retrieving the hostname faster.

**What kind of change does this PR introduce?**

Did you add tests for your changes?

Does this PR introduce a breaking change?

If relevant, what needs to be documented once your changes are merged or what have you already documented?

[alexander-akait]

I am fine with this change, feel free to merge when CI will be green, also we have url.parse in our webpack-dev-middleware, make sense to improve this there too for the next major release