Libsm64: Mario 64 as a library for use in external game engines

libsm64 is a library that extracts Super Mario 64's movement and rendering code from the SM64 decompilation project, allowing developers to integrate Mario into external game engines with minimal effort. The library requires users to provide an official SM64 ROM to extract Mario's textures and animations, and offers bindings for multiple platforms including Rust, Godot, Unity, and Blender. It can be built on Mac, Linux, Windows, and Emscripten, with documentation and a test example provided for developers.