Larger terrain and perlin tests

projet-code/scenes_inf443/base/base.exe

projet-code/scenes_inf443/base/src/ball.cpp

projet-code/scenes_inf443/base/src/ball.hpp

projet-code/scenes_inf443/base/src/scene.cpp

projet-code/scenes_inf443/base/src/scene.hpp

projet-code/scenes_inf443/base/src/terrain.cpp

projet-code/scenes_inf443/base/src/terrain.hpp