feat(compression): extract compression from oxidized-protocol

Move Zlib compression/decompression implementation into standalone crate.
Includes CompressionError, compress(), decompress(), and 14 unit tests.

Author: dodoflix

Cargo.toml

@@ -12,6 +12,8 @@ keywords     = ["minecraft", "oxidized-mc"]
 categories   = ["game-development"]
 
 [dependencies]
+flate2    = "1"
+thiserror = "2"
 
 [dev-dependencies]
 proptest = "1"