'Player' class, separated main file

Moved render code to world_render.h, declarations code (assets and blocks) to declarations.h

src/objects/Player.cpp

@@ -0,0 +1,10 @@
+#include "Player.h"
+#include "../physics/Hitbox.h"
+
+#include <glm/glm.hpp>
+
+Player::Player(glm::vec3 position, float speed, Camera* camera) :
+		speed(speed),
+		camera(camera){
+	hitbox = new Hitbox(position, vec3(0.2f,0.9f,0.2f));
+}