Minor - Améliore la gestion des entités ImGui - V14.8.0

Optimizes entity list updates in the ImGui interface by caching entity names and IDs.

This reduces unnecessary string operations during rendering and improves performance, especially when dealing with a large number of entities.

The initial ImGui window size has also been reduced for performance reasons.

enginecustom/src/inc/system/imguiManager.h

@@ -39,6 +39,12 @@ struct ComponentEntry {
 	std::function<void()> addFunc;
 };
 
+struct CachedEntity
+{
+	std::string name;
+	ecs::EntityID id;
+};
+
 class imguiManager
 {
 public:
@@ -175,6 +181,10 @@ private:
 	// --------------------------------------------- //
 	// ----------------- Functions ----------------- //
 	// --------------------------------------------- //
+	/**
+	 * Update the cached entity list if there is a new, delete or rename entity
+	 */
+	void UpdateCachedEntitiesIfNeeded();
 
 	// --------------------------------------------- //
 	// ----------------- Variables ----------------- //
@@ -232,6 +242,8 @@ private:
 	std::string version_driver_;
 
 	ecs::EntityID m_selected_entity_id = 0; // ID of the currently selected entity
+	std::vector<CachedEntity> cachedEntities_;
+	bool entityListDirty = true;
 
 	int BUILD_VERSION_VER = -1;
 };