bin-lattice spatial subdivision examples not ported

[shiffman]

Discovered during nature-of-code/noc-book-2#98

[shiffman]

https://github.com/nature-of-code/noc-examples-processing/tree/master/chp06_agents/binlatticespatialsubdivision/intersection

Also, I intend to make a quadtree example and apply the above algorithm and quadtree to the flocking scenario.

[shiffman]

There's a new Example 5.10 in the book. Leaving this open as this repo needs to either be archived or match the new examples.