refactoring continued

comIF/obsw_ethernet_com_if.py

comIF/obsw_serial_com_if.py

config/obsw_config.py

obsw_tmtc_client.py

sendreceive/obsw_multiple_commands_sender_receiver.py

sendreceive/obsw_sequential_sender_receiver.py

sendreceive/obsw_single_command_sender_receiver.py

tc/obsw_tc_service2.py

tc/obsw_tc_service8.py

tm/obsw_tm_service_3.py

utility/obsw_tmtc_printer.py