This commit introduces the core VRM loading capabilities for the 3D rendering system. It implements a dedicated VRMLoader class that can parse VRM files (which are binary glTF format) and extract essential data including meshes, materials, textures, and VRM-specific extension metadata. The implementation handles both binary and JSON formatted VRM files while supporting standard glTF accessor data extraction for vertices, normals, UV coordinates, and indices. This enables the application to load and render 3D models with proper material and texture support from VRM files.
