Geogebra types

Types and API for Geogebra files. This crate is very incomplete and serves mostly as a utility crate for Geo-AID. Any contributions are welcome.

lib.rs:

This is an attempt at creating a library for working with GeoGebra files. This is largely an educated guess and what works how as the documentation on the format is incredibly sparse. This is mostly incomplete and is mostly meant as a utility crate for Geo-AID.