`arrow-pyarrow` offers no way to generate stubs through PyO3's `experimental-inspect`

[jonasdedden]

Is your feature request related to a problem or challenge?

PyO3 offers experimental-inspect, an experimental feature to automatically generate stub files. arrow-pyarrow currently doesn't implement the required interfaces to be usable in this context.

Describe the solution you'd like

#10492 introduces support for experimental-inspect.