Enhance Transform, Collision, Menu, and GUI functionalities

[amasiye]

This pull request introduces significant improvements to the handling of game object hierarchies, scene management, and rendering logic in the core engine. The main focus is on enabling recursive operations on game object trees, improving the accuracy of object search and manipulation, and enhancing scene and rendering behavior.

Hierarchy traversal and recursive operations:

• Game object search methods (find, findWithTag, findAll, findAllWithTag) now search recursively through the entire object hierarchy, not just root objects, by introducing findFirstInHierarchy and collectHierarchyMatches helper methods. This ensures more accurate and comprehensive searches for objects and tags. [1] [2] [3] [4] [5]
• The new getChildren method in GameObject provides direct access to child objects, enabling recursive traversal and manipulation of object trees.

Recursive lifecycle and rendering methods:

• Lifecycle methods (start, stop, resume, suspend, fixedUpdate, update) and rendering methods (render, renderAt, erase, eraseAt) are now applied recursively to all child game objects, ensuring that changes propagate throughout the hierarchy. [1] [2] [3] [4] [5] [6] [7] [8] [9] [10] [11] [12]
• The broadcast method now also propagates method calls recursively to all children, ensuring consistent behavior across the hierarchy.

Scene management and root object handling:

• The AbstractScene class now tracks its managing SceneManager instance and improves root object registration by only adding unparented objects to the root list, preventing duplicates and maintaining a clean hierarchy. [1] [2] [3]

Rendering improvements:

• The renderer now uses the world position of game objects for rendering calculations, improving the accuracy of sprite placement.

Environment map loading refactor:

• Refactored environment map loading methods in AbstractScene for clarity and correctness, ensuring robust file loading and error handling. [1] [2]

These changes collectively provide a more robust, flexible, and accurate system for managing game objects and scenes, especially in complex hierarchies.