Camera for tracking player movement

The first implementation of our camera will be a locked-on camera, which will lock onto our player and follow them as they move through the area in the level. Right now, our level is the same size as our fixed camera at that level. Not only will we need to make our level larger, but we will also need to modify our object wrapping so that it works with our camera. The first thing that we will need to do to implement our locked-on camera is to modify our game.hpp file. We will be creating a Camera class as well as a RenderManager class, where we will move all of our rendering-specific code. We will also need to add some #define macros than define our level's height and width, because that will now be different to the canvas height and width that we have already defined. We will also be adding a few additional overloaded operators to our Vector2D...