Cancun support

[RomarQ]

• [x] Adds 2 new opcodes (TLOAD and TSTORE) for manipulating state that behaves almost identically to storage but is discarded after every transaction.

  • These new instructions were introduced by EIP-1153 and included in Cancun fork.

• [x] Adds a new opcode (MCOPY) for copying memory. Implementing this change will be important in ensuring that the same solidity/vyper contract compiles down to the same bytecode.´

  • This new instruction was introduced by EIP-5656 and included in Cancun fork.

• [ ] Changes the behaviour of the self destruct opcode.

  • EIP-6780: SELFDESTRUCT only in same transaction