Method create

src/service/moment.service.js:12–16

(userId, content)

class MomentService {
  async create(userId, content) {
    const statement = `INSERT INTO moment (content, user_id) VALUES (?, ?);`;
    const [result] = await connection.execute(statement, [content, userId]);
    return result;
  }

  async getMomentById(id) {
    const statement = `