Implement Simple Graphics for the Client

**What is the Feature you wish to add?**
I want to implement simple sprite graphics into the client, so that instead of using simple rectangles, we can use actual images for the walls and platforms.

**Give an estimate to how much work might go into creating this feature**
I'd imagine this would take a couple of hours to implement and test. Approx 4 hours total.

**Write a small list of steps that one would follow to create this feature.**
Need to make changes to the level generation procedure to use images when creating the tiles for the level, instead of using rectangles. Further testing can be done by creating a variety of levels and different tiles.