Create MapGenerator.gd Script and Reformat Numeric Tile Representation
The code for the map generation is now seperate from the tile placement code. The map generation code is located in the new MapGenerator.gd script. In the 2D array of ints that represented the map, 0's equated to empty spaces and 1's equated to walls. Now the value assigned to the enum EMPTY equates to empty spaces and the value assigned to the enum WALL in the map generator script equates to walls. This serves to future proof the code as enums for the rest of the possible tiles, such as WATER, BRICK, and ROCK_T (rock terrain), are also present.