LibCrypto: Make Digests able to return bytes

Author: https://github.com/mhermier
Commit: 22efc34ec5
Pull-request: https://github.com/SerenityOS/serenity/pull/11605
Reviewed-by: https://github.com/alimpfard

Userland/Libraries/LibCrypto/Hash/HashFunction.h

@@ -21,6 +21,8 @@ struct Digest {
 
     [[nodiscard]] ALWAYS_INLINE const u8* immutable_data() const { return data; }
     [[nodiscard]] ALWAYS_INLINE size_t data_length() const { return Size; }
+
+    [[nodiscard]] ALWAYS_INLINE ReadonlyBytes bytes() const { return { immutable_data(), data_length() }; }
 };
 
 template<size_t BlockS, size_t DigestS, typename DigestT = Digest<DigestS>>