Todo List API

In this project you are required to develop a RESTful API to allow users to manage their to-do list. The previous backend projects have only focused on the CRUD operations, but this project will require you to implement user authentication as well.

1. User authentication
2. Schema design and Databases
3. RESTful API design
4. CRUD operations
5. Error handling
6. Security
7. User registration to create a new user
8. Login endpoint to authenticate the user and generate a token
9. CRUD operations for managing the to-do list
10. Implement user authentication to allow only authorized users to access the to-do list
11. Implement error handling and security measures
12. Use a database to store the user and to-do list data (you can use any database of your choice)
13. Implement proper data validation
14. Implement pagination and filtering for the to-do list