Proposed property to link project to supporting foras

Hi!

We're using DOAP pretty operationally these days to package Perl modules. Project metadata, user-facing changelogs, the dependency resolution, the links to github repos and bugtracker, etc is all generated from that. So, it is pretty much driving the whole distribution.

However, I needed to link the project to an IRC channel that we use to support it, and rather than introduce YA specific property about that, I figured it would be better to link to sioc:Container, which again has a sioc:Forum as subclass, which again has sioct:ChatChannel. 

Moreover, this can be used in a wide variety of scenarios, as it can be used to link to everything from whole bulletin boards, to individual IRC channels. And everything in between. Thus, I think it makes a nice addition to the much used specific properties.

A similar property doap:developers-forum might also be appropriate, pretty much for the same reasons. :-)

Cheers,

Kjetil