Add hashing y verificación de contraseña

mvp/b2c/src/lib/auth/password.ts

@@ -0,0 +1,11 @@
+import bcrypt from 'bcryptjs';
+
+const SALT_ROUNDS = 10;
+
+export function hashPassword(plain: string): Promise<string> {
+  return bcrypt.hash(plain, SALT_ROUNDS);
+}
+
+export function verifyPassword(plain: string, hash: string): Promise<boolean> {
+  return bcrypt.compare(plain, hash);
+}