Blockchain tests support: Add ommer block rewarding

[rodiazet]

No description provided.

[codecov]

Codecov Report

Merging #683 (35356f1) into master (095f83a) will decrease coverage by 0.01%.
The diff coverage is 97.56%.

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #683      +/-   ##
==========================================
- Coverage   97.48%   97.48%   -0.01%     
==========================================
  Files          85       85              
  Lines        8177     8215      +38     
==========================================
+ Hits         7971     8008      +37     
- Misses        206      207       +1     

Flag	Coverage Δ
blockchaintests	62.71% <ø> (ø)
statetests	73.93% <38.46%> (-0.23%)	⬇️
statetests-silkpre	23.12% <12.82%> (-0.08%)	⬇️
unittests	95.01% <97.56%> (+0.01%)	⬆️

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Files Changed	Coverage Δ
test/state/state.hpp	100.00% <ø> (ø)
test/unittests/state_transition.hpp	0.00% <ø> (ø)
test/unittests/state_transition.cpp	94.59% <50.00%> (-2.63%)	⬇️
test/state/state.cpp	98.57% <100.00%> (+0.07%)	⬆️
test/statetest/statetest_loader.cpp	90.33% <100.00%> (+0.20%)	⬆️
test/statetest/statetest_runner.cpp	100.00% <100.00%> (ø)
test/unittests/state_transition_block_test.cpp	100.00% <100.00%> (ø)
...est/unittests/statetest_loader_block_info_test.cpp	100.00% <100.00%> (ø)

[rodiazet]

Moved to #682