Macro define_enum_with_from_str

macro_rules! define_enum_with_from_str {
    (
        #[repr($repr:ident)]
        $(#[$meta:meta])*
        $name:ident {
            $($variant:ident),+ $(,)?
        },
        default = $default_variant:ident
    ) => { ... };
    (
        #[repr($repr:ident)]
        $(#[$meta:meta])*
        $name:ident {
            $($variant:ident),+ $(,)?
        }
    ) => { ... };
}