feat: move animation baking to Chef pipeline and refactor consts
- Offload skeletal animation baking to the Chef tool, reducing game load times to ~1.5s.
- Update AnimAsset to load pre-calculated .anim and .anim.bin assets.
- Relocate global constants to libs/shared/consts.hpp.
- Refactor Chef to use a centralized GLTF scene loader.
- Improve Makefile PCH management and add clean-all target.
- Extract BGFX reset flags and disable VSync by default.
- Update mob task list in todo.md.