Implement EIP-1153: Transient storage

[chfast]

EIP-1153: Transient storage opcodes
Add opcodes for manipulating state that behaves identically to storage but is discarded after every transaction

https://eips.ethereum.org/EIPS/eip-1153

[gumb0]

You could add them to EVMC already

[chfast]

I stopped adding these to EVMC (e.g. MCOPY is missing). This seems double work with little benefits. Also EVMC instruction information is not directly usable by evmone because not constexpr.

What do you think about removing instructions from EVMC? This is a bit of work, but can be done.

[gumb0]

Probably fine, if nobody uses them.

[codecov]

Codecov Report

Merging #669 (5da3bef) into master (503ec3c) will increase coverage by 0.01%.
The diff coverage is 100.00%.

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #669      +/-   ##
==========================================
+ Coverage   97.54%   97.56%   +0.01%     
==========================================
  Files          91       92       +1     
  Lines        8473     8535      +62     
==========================================
+ Hits         8265     8327      +62     
  Misses        208      208              

Flag	Coverage Δ
blockchaintests	62.61% <0.00%> (-0.44%)	⬇️
statetests	73.45% <100.00%> (+0.17%)	⬆️
statetests-silkpre	22.64% <0.00%> (-0.19%)	⬇️
unittests	95.50% <100.00%> (+0.08%)	⬆️

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

Files Changed	Coverage Δ
test/state/account.hpp	100.00% <ø> (ø)
test/state/host.hpp	100.00% <ø> (ø)
test/unittests/instructions_test.cpp	89.58% <ø> (ø)
lib/evmone/instructions.hpp	100.00% <100.00%> (ø)
test/state/host.cpp	93.03% <100.00%> (+0.25%)	⬆️
...ttests/state_transition_transient_storage_test.cpp	100.00% <100.00%> (ø)
test/utils/bytecode.hpp	95.96% <100.00%> (+0.11%)	⬆️

[gumb0]

Looks good to me, needs rebase.