EIP-663 DUPN SWAPN EXCHANGE

Documentation for tests/prague/eip7692_eof_v1/eip663_dupn_swapn_exchange@091c1aa1.

Generate fixtures for these test cases for Prague with:

fill -v tests/prague/eip7692_eof_v1/eip663_dupn_swapn_exchange --fork Prague

Tests EIP-663: SWAPN, DUPN and EXCHANGE instructions

Tests for EIP-663: SWAPN, DUPN and EXCHANGE instructions.