Create grid object

[Karanstr]

Wraps (?) or otherwise implements the directed graph, giving it uniform structure.

• Define max depth so things like rendering know when to stop recursing. //Stupid
• Determine whether I care about recusive sections and how to handle them. //I don't care
• ~~ Define count of node children so I can un-hard-code it from the graph ~~
• ~~ Add functions for handling root indexes for raising/lowering the area of the grid. ~~