Refactor:
`(o op) getAddr` -> `(a *Appleone) getAddr`
`(o op) getOperand` `(a *Appleone) getOperand`
This makes way more sense to me and has been bothering me for a while.
So far the pattern feels a tiny bit weird but also has been nice to work
with. As you can see, the op now contains it’s instruction execution func
which can be called directly from the op.
Still a little iffy on the code design, although this seems like it
could be a desirable pattern. This way I would have to write an opcode
handler for all the cases and register it to the “op”. That way step
calls are super simple from Appleone’s point of view -> get the operation
and that operation has everything needed to execute on the vm.
