refactor: reduce Window references

src/window/Camera.hpp

@@ -5,6 +5,7 @@
 
 class Camera {
     float fov = 1.0f;
+    float ar = 0.0f;
 public:
     glm::vec3 front {};
     glm::vec3 up {};
@@ -17,7 +18,6 @@ public:
     glm::mat4 rotation {1.0f};
     bool perspective = true;
     bool flipped = false;
-    float aspect = 0.0f;
     float near = 0.05f;
     float far = 1500.0f;
 
@@ -37,4 +37,5 @@ public:
     float getFov() const;
 
     float getAspectRatio() const;
+    void setAspectRatio(float ar);
 };