ARQ-1878 Introduce TableEntry

@aslakknutsen could you try if it is ok for you, please?
@aslakknutsen 

This should give you GroupEntry which can hold other GroupEntries in properties hence you can nested it recursively.

It holds only tables and key-values. Doing it in general is PITA and I think you basically needs these two property elements with that xrebel.

XSLT transformation is not yet done, I am curious with that recursive thing.