This patch adds a simple node to output the min and max of an axis aligned
bounding box for the geometry, including instances. The initial use case
I'm thinking about is a "bounding box boolean" node group, but I'm sure
there are others that wouldn't take too much imagination to come up with.
{F9819718}
{F9819684}
{F9803003 size=full}
I'm not sure that these are the best outputs for such a node. I really like how general
and simple it is though, it's easy to imagine using this as a building block of more
complex setups. Also, less importantly, it's nice for once to see a node that doesn't
have a geometry output socket.