add Recording.task_description; recording.py types and documentation

[abrichr]

Implements #4.

[abrichr]

Current generates the following exception:

2023-04-17 13:30:20.293 | INFO     | __main__:read_window_events:389 - starting
2023-04-17 13:30:20.298 | INFO     | __main__:read_screen_events:360 - starting
Exception in thread Thread-5 (read_mouse_events):
Traceback (most recent call last):
  File "/usr/local/Cellar/python@3.10/3.10.11/Frameworks/Python.framework/Versions/3.10/lib/python3.10/threading.py", line 1016, in _bootstrap_inner
2023-04-17 13:30:20.303 | INFO     | __main__:process_events:91 - starting
    self.run()
  File "/usr/local/Cellar/python@3.10/3.10.11/Frameworks/Python.framework/Versions/3.10/lib/python3.10/threading.py", line 953, in run
    self._target(*self._args, **self._kwargs)
  File "/Users/abrichr/MLDSAI/src/puterbot/puterbot/record.py", line 562, in read_mouse_events
    mouse_listener = mouse.Listener(
  File "/Users/abrichr/MLDSAI/src/puterbot/.venv/lib/python3.10/site-packages/pynput/mouse/_darwin.py", line 170, in __init__
    super(Listener, self).__init__(*args, **kwargs)
  File "/Users/abrichr/MLDSAI/src/puterbot/.venv/lib/python3.10/site-packages/pynput/mouse/_base.py", line 271, in __init__
    on_move=self._wrap(on_move, 3),
  File "/Users/abrichr/MLDSAI/src/puterbot/.venv/lib/python3.10/site-packages/pynput/_util/__init__.py", line 283, in _wrap
    argspec = inspect.getargspec(f)
  File "/usr/local/Cellar/python@3.10/3.10.11/Frameworks/Python.framework/Versions/3.10/lib/python3.10/inspect.py", line 1237, in getargspec
    raise ValueError("Function has keyword-only parameters or annotations"
ValueError: Function has keyword-only parameters or annotations, use inspect.signature() API which can support them

[abrichr]

Fixed in OpenAdaptAI/pynput@5d72567