allow transfer large files, memory need to be allocated

common/cpp/src/system_io/system_io.cpp

common/cpp/src/system_io/system_io.h

producer/api/cpp/include/producer/producer_error.h

producer/api/cpp/src/producer_impl.cpp

producer/api/cpp/src/producer_impl.h

producer/api/cpp/src/producer_request.cpp

producer/api/cpp/src/producer_request.h

producer/api/cpp/src/request_handler_tcp.cpp

producer/api/cpp/unittests/test_producer_impl.cpp

producer/api/cpp/unittests/test_request_handler_tcp.cpp

receiver/src/request.cpp

receiver/src/request_handler_file_write.cpp

receiver/src/request_handler_file_write.h

receiver/unittests/test_request.cpp

receiver/unittests/test_request_handler_file_write.cpp