fix: fix tests and add Makefile

vault/tests/wasm_session_manager.rs

@@ -1,6 +1,7 @@
 //! WASM integration test for SessionManager using kvstore::WasmStore
 
-use vault::Vault;
+
+use vault::{Vault, KeyType, KeyMetadata, SessionManager};
 #[cfg(target_arch = "wasm32")]
 use kvstore::WasmStore;
 use wasm_bindgen_test::*;