ApplicationLogs serialization

[AnnaShaleva]

Modules
ApplicationLogs and RPCClient Neo 3 preview 3

Describe the bug
ApplicationLogs Plugin serializes Blockchain.ApplicationExecuted.Stack as array of StackItem (here). RPCClient deserializes RpcApplicationLog.Stack as array of ContractParameter (here). So there's a mismatch between serialization formats of application logs e.g. for ByteString stackitem type and ByteArray smartcontract parameter type.

Expected behavior
It would be great to unify serialization format for application logs.

[ProDog]

@AnnaShaleva please look #321, now to serialize by Utility.StackItemFromJson.

[AnnaShaleva]

It's OK now, thank you for the response!