Macro rusl::transparent_bitflags

macro_rules! transparent_bitflags {
    (
        $(#[$outer:meta])*
        $vis:vis struct $BitFlags:ident: $T:ty {
            const DEFAULT = $const_default:expr;
            $(
                $(#[$inner:ident $($args:tt)*])*
                const $Flag:ident = $value:expr;
            )*
        }
    ) => { ... };
}