Replace deprected pk_reources with importlib.metadata

[kalteslicht]

I use a fork of the homeassistant-vorwerk custom integration in Home Assistant which uses pybotvac as a dependency and noticed this warning in the logs:

/usr/local/lib/python3.13/site-packages/pybotvac/version.py:1: UserWarning: pkg_resources is deprecated as an API. See https://setuptools.pypa.io/en/latest/pkg_resources.html. The pkg_resources package is slated for removal as early as 2025-11-30. Refrain from using this package or pin to Setuptools<81. import pkg_resources

These changes should fix the problem.

[epenet]

I don't think the fallback is necessary

Suggested change

	from typing import TYPE_CHECKING
	if TYPE_CHECKING:
	# During type checking, we assume the standard library interface is available
	from importlib.metadata import PackageNotFoundError, version
	else:
	# At runtime, use stdlib importlib.metadata if available, otherwise fall back
	try:
	from importlib.metadata import PackageNotFoundError, version
	except ImportError:
	try:
	from importlib_metadata import PackageNotFoundError, version # backport
	except ImportError:
	# Final fallback: provide minimal stubs
	class PackageNotFoundError(Exception):
	"""Fallback exception used when metadata backends are unavailable."""
	pass
	def version(_dist_name: str) -> str:
	"""Fallback version() that always raises PackageNotFoundError."""
	raise PackageNotFoundError(f"Package '{_dist_name}' not found")
	from importlib.metadata import PackageNotFoundError, version

[epenet]

@stianaske have you seen this PR?

setuptools 82.0.0 has been released, and pkg_resources is now fully removed

See home-assistant/core#162611
And https://github.com/pypa/setuptools/blob/main/NEWS.rst