feat(lsp): goto struct definition from local reference

[kobyhallx]

Considering

struct Pair {
    first: Field,
    second: Field,
}

impl Pair {

    fn bar(self) -> Field {
        self.first
    }
}

fn main() {

    let p = Pair { first: 1, second: 1 };

    assert(p.bar() == 1);
}

Chosing Goto Type Definition options while at symbol p of line assert(p.bar() == 1); should take user to first line struct Pair {.