Add rudimentary support for OpenQASM 3.0

[ausbin]

I'm not much of a Haskell or Quipper expert, but here is some effort towards OpenQASM 3 support.

Specifically, this introduces the ctrl@ gate modifier so that this tool does not need to decompose, for example, multi-controlled P(theta) gates on its own. You can pass the flag -3 on the command line to turn that on

[onestruggler]

we also have a new repo for OpenQASM 3 support here: https://github.com/onestruggler/qasm-quipper

The repo is under my name, but it's solely by Scott.

[ausbin]

Wow, thanks for letting me know about that. That is very pretty, @ScottWe

[ScottWe]

Hi @ausbin, thank you! I haven't updated the readme in a while (I should do this) but here's a reference if you are interested: https://arxiv.org/pdf/2404.08147