Provide a simple macro for the common use case of splitting by grapheme into a vector

[tgross35]

It's a fairly common task (in my use at least) that's kind of clunky to do. The macro is small and could either be in the crates or the docs, or even just here!

#[macro_export]
macro_rules! graph_vec {
    ($ex:expr) => {
        $ex.graphemes(true).collect::<Vec<&str>>()
    };
}

https://play.rust-lang.org/?version=stable&mode=debug&edition=2021&gist=0715ba0dd9359305756bc265b092dc1a

[Manishearth]

I don't find this kind of API to be typical Rust design: if it can be done with combinators it probably will be.

Furthermore I don't actually think this particular usage is that common, it really depends on what you're trying to do.