Implement Amsterdam instructions

[frangio]

New instructions required for solc semantic tests:

• EIP-8024: DUPN, SWAPN, EXCHANGE
• EIP-7843: SLOTNUM

I implemented DUPN and SWAPN in frangio@7816b11 in order to test argotorg/solidity#16424. It was mostly vibe coded and I'm not confident in the implementation, but if it looks okay I can open a PR and iterate on it.

[frangio]

This seems to require an EVMC release but that repository appears to be archived.