sender receiver objects simplified

config/OBSW_Config.py

obsw_tmtc_client.py

sendreceive/obsw_command_sender_receiver.py

sendreceive/obsw_multiple_commands_sender_receiver.py

sendreceive/obsw_sequential_sender_receiver.py

sendreceive/obsw_single_command_sender_receiver.py

tc/OBSW_TcService2.py

tc/OBSW_TcService3.py

tc/OBSW_TcService8.py

tc/obsw_pus_tc_packer.py

test/obsw_module_test.py

test/obsw_pus_service_test.py

utility/obsw_args_parser.py

utility/obsw_exit_handler.py