[Feature] selector! macro

[antazoey]

Component

Other (please provide more details)

Describe the feature you would like

I want to be able to easily create selector bytes at compile time using a macro like selector!("getMaker()")

pub const GET_MAKER: [u8; 4] = selector!("getMaker()");

Additional context

I am not sure which component this should/would live in.

[DaniPopes]

You can already achieve this with the sol! macro:

sol! {
    function getMaker();
}

getMakerCall::SELECTOR;

If you really want just keccak256 at compile time, then use keccak-const.