Add Quiz App Project: quizApp.js, README.md, solution.js, and solutionExplain.md

[adityakrmishra]

This pull request introduces a new project, Quiz App, to the repository. The project includes the main application file quizApp.js, detailed documentation in README.md, a solution file solution.js, and an explanation of the solution in solutionExplain.md.

Files Added:

quizApp.js: Contains the main code for the Quiz App.

README.md: Provides an overview of the project, including its features, how to use it, and ways to solve it.

solution.js: The solution file for the Quiz App, demonstrating the expected implementation.

solutionExplain.md: An explanation of the solution, including key details and clarifications.

Description: The Quiz App is a command-line application that tests users' knowledge through multiple-choice questions. The project highlights key JavaScript concepts such as arrays, loops, functions, and user input handling using the readline module.

quizApp.js: The primary file that includes the quiz questions, logic for displaying questions, checking answers, and tracking the score.

README.md: Comprehensive documentation that provides an introduction to the Quiz App, details on the features, instructions on how to run the app, and a guide to solving the quiz.

solution.js: The solution file that mirrors the implementation in quizApp.js, serving as a reference for the correct answers and logic.

solutionExplain.md: A detailed explanation of the solution, including insights into the code structure, logic, and the thought process behind the implementation.

Note: I used an AI assistant to help articulate my thoughts clearly due to my language communication skills. I assure you that I fully understand the purpose and necessity of these changes.

Thank you for considering this contribution. Please let me know if there are any questions or further clarifications needed.

[adityakrmishra]

issue #515 were created already approve it for merging