Macro libafl::impl_default_multipart

macro_rules! impl_default_multipart {
    ($mutator: ty, $($mutators: ty),+$(,)?) => { ... };
    ($mutator: ty) => { ... };
}

Implements the marker trait super::DefaultMultipartMutator for one to many types, e.g.:

impl_default_multipart!(
    // --- havoc ---
    BitFlipMutator,
    ByteAddMutator,
    ByteDecMutator,
    ByteFlipMutator,
    ByteIncMutator,
    ...
);