Chapter 9: add hasing-with-bcrypt samples

Chapter09/hashing-with-bcrypt/validate-password.js

@@ -0,0 +1,10 @@
+const password = process.argv[2];
+const hash = process.argv[3];
+const bcrypt = require("bcrypt");
+
+bcrypt
+  .compare(password, hash)
+  .then((res) => {
+    console.log(res);
+  })
+  .catch((err) => console.error(err.message));