public-vm(transpiler): generate proper type tags

[dbanks12]

The following AVM instructions have type tags:

1. Arithmetic have inTag
2. Bitwise have inTag
3. Conditionals have inTag
4. CAST has dstTag

For 1, 2, and 3, the Brillig instruction is flagged with a bit_size which will likely change to specify one of a few pre-known types (u8, ... u128).

Brillig's BinaryFieldOps can be transpiled to have field tag.

Brillig does not yet have CAST, but should eventually.

[dbanks12]

Can accomplish this without Noir limiting types/sizes by triggering a transpiler error if a BinaryIntOp/Const bit_size is not a standard u8..u128. And just tag the generated instruction according to the bit size.

Blocked by #4385