Backward compatible class replaced by a function

[gsnider2195]

The diffsync.DiffSync class was changed to a function

diffsync/diffsync/__init__.py

Lines 897 to 904 in 7ca1717

	def DiffSync(*args: Any, **kwargs: Any) -> Adapter: # noqa pylint: disable=invalid-name
	"""For backwards-compatibility, keep around the old name."""
	warnings.warn(
	"'diffsync.DiffSync' is deprecated and will be removed with 2.1, use 'diffsync.Adapter' instead.",
	DeprecationWarning,
	)
	return Adapter(*args, **kwargs)

This causes the import of any class using this as a base class to fail:

import diffsync


class TestAdapter(diffsync.DiffSync):
    """A simple DiffSync adapter for testing purposes."""

Traceback (most recent call last):
  File "/home/gary/github/nautobot/nautobot-app-device-onboarding/test_diffsync.py", line 4, in <module>
    class TestAdapter(diffsync.DiffSync):
TypeError: function() argument 'code' must be code, not str

[jmcgill298]

It seems to me to make sense to do this instead of the func def

class DiffSync(Adapter):

    def __init__(*args, **kwargs):
        warnings.warn(...)
        super.__init__(*args, **kwargs)