[Pasdoc-main] Group tag

[Hans-Peter D. <DrD...@ao...>]

Now I've implemented in PasDoc2 a first version of an group tag, for 
enums. The tag requires an group name, and an optional group 
description. Then the tagged members are moved into added Values lists, 
which are shown only by the FullHTML generator.

In the next step @groupstart and @groupend tags will be added. Some 
opinions are required, before the groups will become applicable to other 
items, like constants. Most important: How should groups be presented in 
the docs?

DoDi