Completely drop ALL added methods to the base class

[pauxus]

I.e. drop all apply/withTemplate etc methods as well a the access to the Creator as well and completely encapsulate using a single (or multiple) Wrapper class and its static methods.

i.e.

• Klum.Create(MyClass) instead of MyClass.Create
• Klum.Apply(myinstance) {} instead of myInstance.apply {}

This is already adressed partially in various other tickets, the main part is to drop the Creator field as well.

Basic Problem: There might be no easy way to make Klum.Create() return an IDE safe version of the factory.