Rust bindings for GGPO, generated by bindgen. Unfinished

Install prerequisites and clone repo. Tests are in src/lib.rs and can be run with cargo test.

For a top-level view of all bindings generated, use cargo doc and travel to the target/doc directory.

• All requirements for GGPO and rust-bindgen must be installed.
• Windows is the only platform supported by GGPO currently.

• Dependencies identified and linked
• Bindings generated by bindgen

• Create 'sanity tests' for bindings
• Create safe interface for bindings

• Proper build system for actually compiling GGPO instead of just including the .lib file in the repository
• Properly serializing/deserializing data from Rust to GGPO and vice versa