Change Name::new to take Into<String> instead of String

[willcrichton]

This reduces verbosity for &'static strings, e.g. Name::new("a name") instead of Name::new("a name".to_string()).

[DJMcNab]

Makes sense to me. I wonder if it makes more sense to use Cow<'static, str> here? But that's a future discussion which isn't relevant to this PR.

[cart]

Yeah I think using cow here makes a lot of sense. Y'all are free to follow up if you want :)

[CleanCut]

I attempted a Cow<'static, str> followup in #1308