Tile place shortcut

[MatzE-sch]

If you're interested in getting even fancier with it you could also add shortcuts for placing tiles. The backend actually returns a complete list of valid tile place locations in the targets list so it could look something like press p > all valid placement locations light up with a number > press corresponding number > tile is placed. This is beyond the scope of this PR but could be a cool interaction if you're ever interested in adding that as well.

Originally posted by @freglyc in #11 (review)

[MatzE-sch]

Yea i already imagined something like that and searched for methods in the drag and drop library (dnd-kit) for automatically picking up the tile and having it at the mouse cursor without moving the mouse to get the tile.

So far i just found, that this library works with arrow keys to move the tile with the keyboard if the DraggableToken has a tabindex (test commit)