Add type annotations to client.dynamic.Dispatch

[junkmd]

Remaining tasks for #443 and #444.

comtypes/comtypes/client/dynamic.py

Lines 22 to 34 in 11410ce

	def Dispatch(obj):
	"""Wrap an object in a Dispatch instance, exposing methods and properties
	via fully dynamic dispatch.
	"""
	if isinstance(obj, _Dispatch):
	return obj
	if isinstance(obj, ctypes.POINTER(automation.IDispatch)):
	try:
	tinfo = obj.GetTypeInfo(0)
	except (COMError, WindowsError):
	return _Dispatch(obj)
	return lazybind.Dispatch(obj, tinfo)
	return obj

Before PR, please format the code by black (the maximum number of characters per line is 88, which is the default).