Fuzz protocol

[qiweiii]

implement: https://github.com/davxy/jam-stuff/blob/main/fuzz-proto/README.md

target works but fuzzer need some more work to generate useful fuzzing data

[codecov]

Codecov Report

Attention: Patch coverage is 31.08696% with 634 lines in your changes missing coverage. Please review.

Project coverage is 81.42%. Comparing base (982262b) to head (966cf39).
Report is 1 commits behind head on master.

Files with missing lines	Patch %	Lines
Fuzzing/Sources/Fuzzing/FuzzingClient.swift	0.00%	188 Missing ⚠️
Fuzzing/Sources/Fuzzing/FuzzingSocket.swift	0.00%	175 Missing ⚠️
Fuzzing/Sources/Fuzzing/FuzzingTarget.swift	0.00%	131 Missing ⚠️
Fuzzing/Sources/Fuzzing/Messages.swift	0.00%	69 Missing ⚠️
Boka/Sources/Fuzz.swift	0.00%	44 Missing ⚠️
...es/Fuzzing/FuzzGenerator/FuzzGeneratorRandom.swift	48.27%	15 Missing ⚠️
...ain/Sources/Blockchain/State/InMemoryBackend.swift	76.19%	5 Missing ⚠️
Database/Sources/Database/RocksDBBackend.swift	94.87%	2 Missing ⚠️
.../BlockchainDataProvider/InMemoryDataProvider.swift	0.00%	1 Missing ⚠️
...kchain/Sources/Blockchain/State/StateBackend.swift	97.72%	1 Missing ⚠️
... and 3 more

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #340      +/-   ##
==========================================
- Coverage   82.96%   81.42%   -1.54%     
==========================================
  Files         366      374       +8     
  Lines       31526    32437     +911     
==========================================
+ Hits        26154    26413     +259     
- Misses       5372     6024     +652     

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