Shift-based tables for small machines

[jakobnissen]

When there are 16 states or fewer in a machine, you can use a so-called shift based table: https://gist.github.com/pervognsen/218ea17743e1442e59bb60d29b1aa725

These should significantly outperform all other code generators. Worth considering.

[jakobnissen]

Nevermind, this will not actually be that fast compared to what Automa already does.