Implementing the MVC pattern for Kivy framework and KivyMD library.
The application demonstrates working with the FireBase database. The user enters his username and password,
clicks the "LOGIN" button, the application requests data about users from the database, verifies these data with the data
entered by the user and gives the result: whether the user entered the username and password correctly.
- Login - "Kivy"
- Password - "KivyMD"