Add form factory base class backed by Map and Lambda functional object

Implement a new form factory base class that's backed by Map and Lambda functional object.

Example usage:

With following form class.

Developer can use one of the following approach:

1. At plugin Activator start method, register the form class.

2. Create an osgi component, at the bind method for IMappedFormFactory service component.

3. Create a subclass of MappedFormFactory, register as IFormFactory service (DO NOT register as IMappedFormFactory service).