Added create_log_directory function in GSMLogger
Added paramters to configur_logging function in GSMLogger
Used setup.json to pass log file name to configure_logging in generate_subject_mapper.py
Made corrections in setup.json to align with the above changes
Cleanup `generate_subject_map_input.py` to properly use log path
Modify the setup.py to support source distribution - Task ID #5664
resolved merge conflicts
path to log file is now passed as a parameter and its value can be specified in the setup.json file by user
Merge pull request #7 from ruchidesai/develop

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