Async-gpib

- Updated `pyproject.toml` to fix the changes made in https://github.com/pypa/setuptools/pull/4159
- Updated pre-commit deps

Updated documentation

Moved to async context managers to manage the lifecycle of the gpib object and threadpool

Updated Documentation and renamed some function parameters:
`read(len)` -> `read(length)`
`command(str)` -> `command(cmd)`