Compression support in commons

.github/workflows/extra.yml

.github/workflows/main.yml

Cargo.toml

benches/encoding.rs

build.rs

crates/common/Cargo.toml

crates/common/src/error.rs

crates/common/src/lib.rs

crates/common/src/py.rs

crates/encoding/Cargo.toml

crates/encoding/src/huffman.rs

crates/encoding/src/lib.rs

crates/encoding/src/rle.rs

crates/encoding/src/zippy.rs

frontends/libretro/Cargo.toml

frontends/sdl/Cargo.toml

frontends/sdl/src/main.rs

rustfmt.toml

src/cheats/genie.rs

src/cheats/shark.rs