Gates commands

[codygunton]

This is apparently not tested anywhere, since I delete the UltraHonk gates command and nothing broke. gates_for_ivc does get called, so it exists under OLD_API, but probably it should just be under the gates command of ClientIVCAPI when particular flag values are used.

[ledwards2225]

The task here is to port the "gates" command for UH (currently accessible via bb OLD_API gates -b target/sample.json) to the new CLI format, i.e. remove the need to specify OLD_API

[ledwards2225]

Closed by AztecProtocol/aztec-packages#12288