Merge branch 'rendre-game-engine' into 'master'

src/main/java/engine/display/DisplayManager.java

src/main/java/engine/engineMain/Handler.java

src/main/java/engine/entities/Camera.java

src/main/java/engine/shaders/EntityFragmentShader.glsl

src/main/java/engine/world/WorldGrid.java

src/main/resources/objects/road.obj

src/main/resources/objects/tree.obj

src/main/resources/textures/Button.png

src/main/resources/textures/Tab Background.png

src/main/resources/textures/road.png