Add memory game project

[prathoseraaj]

Description

This pull request adds a new memory-game project to the repository. The memory game is a self-contained folder that includes all required components, configuration, and documentation for running and customizing the game. The project is intended as an additional resource for learners exploring JavaScript and web development concepts.

Motivation and Context

• Expands the collection of beginner-friendly projects in the repo.
• Provides an engaging, interactive way for users to practice DOM manipulation, event handling, and simple game logic in JavaScript.
• Offers clear project structure and code organization for new contributors to reference.

What has changed

• Added the memory-game/ directory with the following:
  • Game source code (components, app logic)
  • Configuration files (eslint, next, postcss, etc.)
  • Documentation (README.md)
  • Assets and public resources

How to test

1. Navigate to the memory-game folder.
2. Follow the setup instructions in the README.md.
3. Run the project locally and verify that the game loads and functions as expected.

Related Issue(s)

N/A

Additional Notes

• Please let me know if further adjustments or documentation are needed.
• I have verified that the memory-game folder is now tracked as regular files (not a submodule).