Adds glTF 2.1 features and GLB v3 (64-bit) support

[mklefrancois]

Description

This PR introduces comprehensive support for several new features specified in glTF 2.1. It also adds compatibility for GLB (glTF Binary) version 3, which utilizes 64-bit length fields, allowing for larger binary assets.

Key additions include:

• glTF 2.1 Features: Implements support for unique IDs (uid) for various top-level glTF entities (Animations, Skins, Samplers, Images, Textures, Materials, Cameras, Meshes, Nodes, Scenes, Lights). Adds structures and parsing/serialization for implicit shapes (Box, Sphere, Capsule, Cylinder, Plane) and bounding volumes attached to nodes. Integrates new accessor component types (HALF_FLOAT, INT64, UNSIGNED_INT64) and asset thumbnails.
• GLB v3 (64-bit) Support: Updates the GLB loader and writer to handle version 3 of the GLB format, which uses 64-bit length fields for chunks. This change enables the processing and creation of glTF binary files exceeding the previous 4GB limit imposed by 32-bit lengths.
• Type Safety: Updates internal function signatures to use size_t for buffer lengths, enhancing type safety and consistency, especially when dealing with potentially large 64-bit sizes.

Type of Change

• Bug fix
• New feature
• Refactoring (no functional changes)
• Documentation update
• Other (please describe):