test: Add tests visualizing underlying RLP for create address

[chfast]

No description provided.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 94.23%. Comparing base (589c1d6) to head (e5cc0a4).
Report is 1 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #1054   +/-   ##
=======================================
  Coverage   94.23%   94.23%           
=======================================
  Files         155      155           
  Lines       15982    16004   +22     
=======================================
+ Hits        15060    15082   +22     
  Misses        922      922           

Flag	Coverage Δ
eof_execution_spec_tests	17.72% <0.00%> (-0.03%)	⬇️
ethereum_tests	27.49% <0.00%> (-0.04%)	⬇️
ethereum_tests_silkpre	19.30% <0.00%> (-0.04%)	⬇️
execution_spec_tests	20.55% <0.00%> (-0.03%)	⬇️
unittests	89.04% <100.00%> (+0.01%)	⬆️

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Files with missing lines	Coverage Δ
test/unittests/state_new_account_address_test.cpp	100.00% <100.00%> (ø)

[chfast]

I decide to rework it even more to have all cases for RLP nonce encoding, needed for #783.