Implement EXCHANGE from EIP-663

[pdobacz]

Closes #774

spec in https://eips.ethereum.org/EIPS/eip-663 and https://github.com/ipsilon/eof/blob/main/spec/eof.md

[pdobacz]

The dividing line between this and the evm_... test still evades me.

My rationale was convenience mostly - this test here only tests basic cases, mostly to ensure different EVMs have the same understanding of the meaning of the arguments. The evm_... test is more manageable and as such contains more cases.

[chfast]

These tests are not needed in this case unless you want to export them to JSON.

[pdobacz]

yes, my thinking was exactly - export to JSON

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 97.99%. Comparing base (9205d33) to head (e9cd4db).

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #839      +/-   ##
==========================================
+ Coverage   97.97%   97.99%   +0.02%     
==========================================
  Files         119      121       +2     
  Lines       11930    12091     +161     
==========================================
+ Hits        11688    11849     +161     
  Misses        242      242              

Flag	Coverage Δ
blockchaintests	61.20% <0.00%> (-0.36%)	⬇️
statetests	61.90% <37.50%> (-0.07%)	⬇️
statetests-silkpre	23.13% <1.94%> (-0.32%)	⬇️
unittests	96.57% <100.00%> (+0.04%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Files	Coverage Δ
lib/evmone/advanced_instructions.cpp	100.00% <ø> (ø)
lib/evmone/baseline_instruction_table.cpp	100.00% <ø> (ø)
lib/evmone/eof.cpp	84.47% <100.00%> (+0.14%)	⬆️
lib/evmone/instructions.hpp	100.00% <100.00%> (ø)
test/unittests/eof_validation_stack_test.cpp	100.00% <100.00%> (ø)
test/unittests/eof_validation_test.cpp	100.00% <100.00%> (ø)
test/unittests/evm_eip663_exchange_test.cpp	100.00% <100.00%> (ø)
test/unittests/instructions_test.cpp	89.58% <ø> (ø)
test/unittests/state_transition_eip663_test.cpp	100.00% <100.00%> (ø)
test/utils/bytecode.hpp	96.49% <100.00%> (+0.02%)	⬆️

[chfast]

Add link to the spec in the description.

[chfast]

These tests are not needed in this case unless you want to export them to JSON.