Add AACS module: KEYDB.cfg parser, VUK lookup, 180K disc entries in <2s

Parses device keys, processing keys, host cert, per-disc VUKs.
Full KEYDB.cfg (60MB, 180K entries) parsed in 1.85 seconds.
All test discs found with VUKs.

Next: disc hash computation, title key decryption, content decryption.

src/lib.rs

@@ -80,6 +80,7 @@ pub mod mpls;
 pub mod clpi;
 pub mod disc;
 pub mod jar;
+pub mod aacs;
 
 pub use error::{Error, Result};
 pub use drive::DriveSession;