matter: Replace mirage-crypto with monorepo crypto packages
- Update dune-project: mirage-crypto -> crypto
- Update lib/dune: mirage-crypto -> crypto
- Rename lib/crypto.ml -> lib/aes_ccm.ml to avoid name shadowing
- Update module references: Crypto.* -> Aes_ccm.* in case.ml, pase.ml
- Module now uses Crypto.AES.CCM16 from crypto package