Add PEP 593 based types for all modules for cleaner usage

[JensHeinrich]

PEP 593 creates an easily extendable syntax to annotate type with further information and annotated-types provides a rather easy interface with its Predicate

So adding a line like

Handelsregisternummer = Annotated[str, Predicate(is_valid)]

to the modules seems to be an useful expansion of this packages capabilities

[arthurdejong]

A problem with this is that the module currently still supports Python 2.7 (most of it should also still work with Python 2.6). In which Python version is this included?

[JensHeinrich]

A problem with this is that the module currently still supports Python 2.7 (most of it should also still work with Python 2.6). In which Python version is this included?

If i see it correctly, it 3.8+