Add persistence transaction support on RocksDb

[aboimpinto]

To make sure that when we save a block all the data is "all in" or "all out", transaction support is need.

[codecov[bot]]

Codecov Report

Merging #528 into development will decrease coverage by 0.55%. The diff coverage is 8.79%.

@@               Coverage Diff               @@
##           development     #528      +/-   ##
===============================================
- Coverage        49.92%   49.36%   -0.56%     
===============================================
  Files              315      315              
  Lines            12908    13060     +152     
===============================================
+ Hits              6444     6447       +3     
- Misses            6464     6613     +149

Impacted Files	Coverage Δ
...lication/Attributes/ConsoleOutputStyleAttribute.cs	0% <0%> (ø)	:arrow_up:
src/NeoSharp.Persistence.RocksDB/RocksDbContext.cs	0% <0%> (ø)	:arrow_up:
...Sharp.Core/Blockchain/Processing/BlockPersister.cs	0% <0%> (ø)	:arrow_up:
...Core/Blockchain/Processing/TransactionPersister.cs	100% <100%> (ø)	:arrow_up:
.../NeoSharp.Persistence.RocksDB/RocksDbRepository.cs	80.22% <44.82%> (-6.82%)	:arrow_down:

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[aboimpinto]

well ... yes .. it woks and this is the code:

public void Rollback(Enlistment enlistment) { _currentWriteBatch.Dispose(); _currentWriteBatch = null; enlistment.Done(); }

mean that all the write batch is discarded and not executed ...

make all the sense in any case ... but if you don't like, there is nothing that I can do ...