EIP-7702: Set EOA account code

[gumb0]

Implement EIP-7702: Set EOA account code. This EIP adds new transaction type set-code that permanently sets the code delegation for an EOA.

Requires new EVMC flag: ipsilon/evmc#720.

[codecov]

Codecov Report

Attention: Patch coverage is 97.54098% with 9 lines in your changes missing coverage. Please review.

Project coverage is 94.37%. Comparing base (14e62c4) to head (4358516).
Report is 12 commits behind head on master.

Files with missing lines	Patch %	Lines
lib/evmone/instructions_calls.cpp	85.18%	4 Missing ⚠️
test/state/errors.hpp	50.00%	2 Missing ⚠️
test/state/state.cpp	96.55%	2 Missing ⚠️
test/statetest/statetest_loader.cpp	93.75%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #961      +/-   ##
==========================================
+ Coverage   94.29%   94.37%   +0.07%     
==========================================
  Files         159      162       +3     
  Lines       17344    17687     +343     
==========================================
+ Hits        16355    16692     +337     
- Misses        989      995       +6     

Flag	Coverage Δ
eof_execution_spec_tests	15.79% <11.20%> (-0.13%)	⬇️
ethereum_tests	26.53% <9.83%> (-0.38%)	⬇️
ethereum_tests_silkpre	18.72% <8.00%> (-0.25%)	⬇️
execution_spec_tests	22.04% <30.87%> (+0.23%)	⬆️
unittests	89.25% <91.25%> (+0.20%)	⬆️

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

Files with missing lines	Coverage Δ
lib/evmone/delegation.cpp	100.00% <100.00%> (ø)
lib/evmone/delegation.hpp	100.00% <100.00%> (ø)
test/state/host.cpp	100.00% <100.00%> (ø)
test/state/precompiles_stubs.cpp	99.76% <100.00%> (+<0.01%)	⬆️
test/state/transaction.cpp	95.45% <100.00%> (+1.16%)	⬆️
test/state/transaction.hpp	100.00% <ø> (ø)
test/statetest/statetest_runner.cpp	96.87% <ø> (-0.27%)	⬇️
test/unittests/evm_eof_calls_test.cpp	100.00% <100.00%> (ø)
test/unittests/state_transition.cpp	98.63% <100.00%> (+0.14%)	⬆️
test/unittests/state_transition_eip7702_test.cpp	100.00% <100.00%> (ø)
... and 4 more

[chfast]

Remember to drop "WARNING: test case with set_code transaction (type 4) skipped".
Added a commit for it.

[chfast]

There are some artificial enviroments where this can crash:

• having invalid delegation designator in state,
• having a precompile with code.

Do you think we should add sanity checks for these when loading tests?

[gumb0]

There are some artificial enviroments where this can crash:

• having invalid delegation designator in state,
• having a precompile with code.

Do you think we should add sanity checks for these when loading tests?

I think it makes sense to add in a separate PR