Added ip/tcp network integration test

common/cpp/include/system_wrappers/io.h

common/cpp/include/system_wrappers/system_io.h

common/cpp/src/system_io.cpp

common/cpp/src/system_io_linux.cpp

common/cpp/unittests/MockIO.h

receiver/src/main.cpp

receiver/src/receiver.cpp

receiver/src/receiver.h

tests/system_io/CMakeLists.txt

tests/system_io/ip_tcp_network/CMakeLists.txt

tests/system_io/ip_tcp_network/ip_tcp_network.cpp