Add column callout factory base class backed by Map and Lambda functional object

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

Example Usage:

With following callout class.

Developer can use one of the following approach:

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

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

3. Create a subclass of MappedColumnCalloutFactory, register as IColumnCalloutFactory service (DO NOT register as IMappedColumnCalloutFactory service).