1. POST /users/: Create a new user.
   • Request body: { "email": string }
   • Response body: { "_id": string, "email": string, "todos": [] }
2. POST /users/login: Log in a user.
   • Request body: { "email": string }
   • Response: Email sent
3. GET /users/:token/todos: Get all todos for a user.
   • Request parameters: token - JWT token for user authentication.
   • Response body: [{ "title": string, "description": string, "endDate": Date, "completed": boolean, "order": number, "_id": string }]
4. POST /users/:token/todos: Create a new todo for a user, sets timeout to send email before todo's end date by 2h.
   • Request parameters: token - JWT token for user authentication.
   • Request body: { "todo": { "title": string, "description": string, "endDate": Date } }
   • Response body: { "_id": string, "name": string, "email": string, "password": string, "todos": [...] }
5. PUT /users/:token/todos/:todoId: Update a todo for a user.
   • Request parameters: token - JWT token for user authentication, todoId - ID of the todo to update.
   • Request body: { "todo": { "title": string, "description": string, "endDate": Date, "completed": boolean, "order": number } }
   • Response body: { "_id": string, "name": string, "email": string, "password": string, "todos": [...] }
6. PUT /users/:token/todos/:todoId/toggle: Toggle the completed status of a todo for a user.
   • Request parameters: token - JWT token for user authentication, todoId - ID of the todo to toggle.
   • Response body: { "_id": string, "name": string, "email": string, "password": string, "todos": [...] }
7. DELETE /users/:token/todos/:todoId: Delete a todo for a user.
   • Request parameters: token - JWT token for user authentication, todoId - ID of the todo to delete.
   • Response body: { "_id": string, "name": string, "email": string, "password": string, "todos": [...] }