feat: Added 2048 game.

[suvodeep12]

Description

Added the popular Android game 2048 implemented in Python.

Type of change

• New feature (non-breaking change which adds functionality)

How Has This Been Tested?

This has been tested by running it on a Python 3.9.7 interpreter. I performed all the possible actions in the game (move up, down, left, right) which implemented all the core functions of the game - reverse, merge and transpose.

Checklist

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes
• Any dependent changes have been merged and published in downstream modules