Script ID mapping
Every script is currently identified by a unique ID.
ID's are derived from the script asset path for scripts loaded via the asset system.
By default this is an identity mapping, but you can override this by modifying the AssetPathToScriptIdMapper inside the ScriptAssetSettings resource before loading the script.
Be wary of path separators, by default script ID's are derived from asset paths, which are platform dependent. Make sure to use `std::path::PathBuf` if you are targetting multiple platforms.