Allow "name" argument on url_for() and url_path_for()

[Kludex]

• Closes "url_for" signature prevents use of "name" in path arguments #608
• Replaces allow 'name' in key word arguments of url_for() and url_path_for() (#608) #611

[Kludex]

@encode/maintainers 👀 🙏

[adriangb]

This looks good to me. But admittedly I don't really use this functionality so I'd like someone who actually uses this to be the one approving ✅

[Kludex]

I want to make a premature release with the lifespan state that was included, but since I included #1385, it may be good to also include this in the release. 😅

@alex-oleshkevich @abersheeran would you mind checking this? 🙏

[abersheeran]

I feel very good. 😊