Minor - Adds dynamic screen depth and near controls - V14.4.0

Implements dynamic adjustment of screen depth and near clipping plane distances via the ImGui interface.

This allows users to modify the perspective projection in real-time, affecting the rendering of the scene.

The changes involve:
- Adding screen depth and near variables to the application class.
- Exposing these variables in the ImGui settings window.
- Adding functions to the application and d3d classes to update the projection matrix based on new screen depth and near values.
- Updates the sky sphere size to use world scale.

enginecustom/src/inc/system/application_class.h

@@ -61,8 +61,8 @@
 // GLOBALS //
 /////////////
 constexpr bool full_screen = false;
-constexpr float screen_depth = 1000.0f;
-constexpr float screen_near = 0.3f;
+// constexpr float screen_depth = 1000.0f;
+// constexpr float screen_near = 0.3f;
 
 static std::map<std::string, std::shared_ptr<model_class>> g_model_cache;
 
@@ -457,16 +457,32 @@ public:
 	 */
 	int get_sky_id() const { return sky_id_; }
 
-	/**
-	 * Set the sky entity size.
-	 * @return The sky entity size as a float.
+	/** Get the Sky entity as a shared pointer.
+	 * @return A shared pointer to the sky entity.
 	 */
-	XMVECTOR get_sky_distance() const { return sky_distance_; };
+	std::shared_ptr<ecs::Entity> get_sky_entity_shared_ptr() const { return sky_entity_; }
+
 	/**
-	 * Set the sky entity size.
-	 * @param distance The new sky entity size as a float.
+	 * Update the screen depth.
 	 */
-	void set_sky_distance(XMVECTOR distance);
+	bool update_screen_depth(float new_screen_depth);
+
+	/**
+	 * Update the screen near.
+	 */
+	bool update_screen_near(float new_screen_near);
+
+	/**
+	 * Get the screen depth.
+	 * @return The screen depth as a float.
+	 */
+	float get_screen_depth() const { return screen_depth; }
+	/**
+	 * Get the screen near.
+	 * @return The screen near as a float.
+	 */
+	float get_screen_near() const { return screen_near; }
+
 	
 private:
 	/**
@@ -581,6 +597,9 @@ private :
 	HWND hwnd_;
 	bool windowed_;
 
+	float screen_depth = 1000.0f;
+	float screen_near = 0.3f;
+
 	// ------------------------------------- //
 	// ------------- RENDERING ------------- //
 	// ------------------------------------- //
@@ -612,7 +631,6 @@ private :
 	
 	int sky_id_ = -1;
 	std::shared_ptr<ecs::Entity> sky_entity_;
-	XMVECTOR sky_distance_ = XMVectorSet(2.0f, 2.0f, 2.0f, 0.0f);
 
 	// ----------------------------------- //
 	// ------------- LIGHTS -------------- //