feat: Derandomize the rosenpass protocol by adding testvectors

- Introduced a new module `test_vector_sets.rs` containing test vector definitions for deterministic protocol testing.
- Added a new test file `test_vector_crypto_server.rs` to validate the protocol implementation using captured internal randomness.
- Added serialization and deserialization of `Secret`, `Public`, and `PublicBox` types in `serialization.rs`.
- Added necessary dependencies in `Cargo.toml` for test vectors: assert_tv, serde and base64
- Updated audit records in `audits.toml` and `imports.lock` for new dependencies.

secret-memory/Cargo.toml

@@ -19,6 +19,10 @@ rand = { workspace = true }
 memsec = { workspace = true }
 allocator-api2 = { workspace = true }
 log = { workspace = true }
+assert_tv = { workspace = true }
+base64 = { workspace = true }
+serde_json = { workspace = true }
+serde = { workspace = true }
 
 [dev-dependencies]
 allocator-api2-tests = { workspace = true }