Support batching multiple RPC requests of different types

[franciszekjob]

Describe your changes

Add support for batching requests of different type

• add JsonRpcProvider.batchRequestsAny()
• add HttpBatchRequest class
• add StarknetResponse as common return type for JsonRpcProvider calls
• add IntResponse, StringResponse
• add inline classes as wrappers for built-in types returned by JsonRpcProvider methods and their corresponding serializers
• add FeltArraySerializer

Allow proceeding with failure of particular requests while using batchRequests and batchRequestsAny

• wrap values returned by send() and sendAsync() methods in Result

Update tests:

• add batch requests any in ProviderTest
• add rpc provider parses batch response with error in JsonRpcResponseTest
• update JsonRpcResponseTest due to changes of JsonRpcProvider methods

Linked issues

Closes

Breaking changes

• This issue contains breaking changes

• Change returned type in JsonRpcProvider methods:
  • getSpecVersion(): HttpRequest<String> -> getSpecVersion(): HttpRequest<StringResponse>
  • callContract(...): HttpRequest<List<Felt>> -> callContract(...): HttpRequest<FeltArray>
  • getBlockNumber(): HttpRequest<Int> -> getBlockNumber(): HttpRequest<StarknetInt>
  • getBlockTransactionCount(...): HttpRequest<Int> -> getBlockTransactionCount(...): HttpRequest<IntResponse>
  • getEstimateFee(...): HttpRequest<List<EstimateFeeResponse>> -> getEstimateFee(...): HttpRequest<EstimateFeeResponseList>
  • simulateTransactions(...): HttpRequest<List<SimulatedTransaction>> -> simulateTransactions(...): HttpRequest<SimulatedTransactionList>

[THenry14]

partial review

[DelevoXDG]

Why this change?

[franciszekjob]

Transaction.kt and TransactionReceipt.kt files to were moved from types/transactions to types because inheritor of sealed class/interface must be in in the same package where this sealed class/interface is defined. Actually, I moved other files from types/transactions directory to types, because imo it doesn't make sense if transacion-related files are split between directory and subdirectory. Wdyt?