adding new decoding of hexmasks to litebitmask.

pyproject.toml

src/main/python/Octeres/bitmask/bitmask_lite.py

src/main/python/Octeres/bitmask/bitmask_serial.py

src/test/python/bitmask/test_bitmask.py

src/test/python/bitmask/test_bitmask_serial.py