Drive damp + code restructuring

__init__.py

beam_current_scan.py

chro.py

fitting.py

growth_damp.py

pyproject.toml

pythoncontrol/README.md

pythoncontrol/__init__.py

pythoncontrol/analysis/growth_damp_utils.py

pythoncontrol/devices/__init__.py

pythoncontrol/devices/beam_parameters.py

pythoncontrol/devices/delay_generator.py

pythoncontrol/devices/device.py

pythoncontrol/devices/fbt.py

pythoncontrol/devices/masterclock.py

pythoncontrol/devices/mode_excitation.py

pythoncontrol/devices/tune_monitor.py

pythoncontrol/injection.py

pythoncontrol/matlab.py

pythoncontrol/measurements/__init__.py