Added virtual function bounds to give AABBs to shapes

RayTracer/shape/Shape.h

@@ -8,5 +8,6 @@ namespace shapes {
 class Shape {
    public:
 	virtual std::shared_ptr<cam::Hit> intersect(const cam::Ray& r) const = 0;
+	virtual util::AxisAlignedBoundingBox bounds() const = 0;
 };
 }  // namespace shapes
\ No newline at end of file