Dispatchers for better integrations between layouts and groups

[MithicSpirit]

Currently, it appears that none of layout-specific dispatchers (layoutmsg) provide integration with groups. Therefore, for interactions with groups, we are forced to use the regular dispatchers like moveintogroup. The issue with this is that moveintogroup takes a direction, which doesn't necessarily behave well with the layout. As a user of the Master layout, I'll provide some example of dispatchers I think could be useful (I imagine similar things could be added for the Dwindle layout, but I've literally never used it):

• Move window into the next group (moveintogroup + layoutmsg,swapnext).
• Move window into a group on the master (moveintogroup + layoutmsg,swapwithmaster).
• Move window into the next group, or out of group if there is no group in that direction (movewindoworgroup + layoutmsg,swapnext).

As an aside, I also think that it would be nice to have some way to automatically create groups when using moveintogroup (or any of these alternatives) if the target window is not in a group. Maybe this could be an option in group:.

From my understanding of the rules, none of these solutions are possible yet. Please let me know if I am mistaken.