Investigate if it makes sense to have the builder generated

[iocanel]

It might make sense to have the builder generated with something like sundrio.

Some benefits I see:

• Reduce boilerplate
• Support for nesting (e.g. with ContainerEntry etc)
• Align with the rest of the ecosystem
• Visitors (?)

I also see points, where it might not make sense:

• Relatively small number of classes and properties
• Custom logic (passing a logger to build)
• The build process has sideffects (not just a building a pojo).

Eitherway, let's have a look and see what's best for the project

[iocanel]

Builders are now properly generated.