Refactoring the existing code

[harshraj22]

We would be building the same project from scratch. But this time, following good practices and design principles in order to make the code more extendible and maintainable.

Here's the initial plan:
Use MVC pattern to re-implement the project, where:

• Model: User class, Database Handler class
• View: Game class
• Controller: class for simple I/O

Here are a few issues in the older implementation:

• Only one class for all use cases. Does not follow Separation of concerns.
• Duplicated code: different functions print to the output screen. Modifying the default string would require the code to be changed at multiple places (bad code smell) voilating DRY principle.
• Bad and unclear meaningful names of function and variables with no docstrings, typing hints.
• No unittests

Feel free to add more points to the discussion.