Add support for Decorators

[Tim-Maes]

Currently as of version 1.2 Bindicate does not support decorators.

Possible implementation:

Implement a new attribute (e.g., DecoratorAttribute) that can be applied to decorator classes, specifying the type to be decorated.
Update the assembly scanning logic to detect classes marked with DecoratorAttribute.
Update the .Register() method to properly handle the stacking of decorators.