Add Linux Command Challenge

[cobie1818]

PR Description 📜

This pull request adds Linux Command Challenge, an educational browser game that helps users practice common Linux terminal commands through a multiple-choice quiz.

The game includes ten questions, immediate correct and incorrect feedback, score tracking, a progress indicator, a final results screen, restart functionality, responsive styling, and keyboard-accessible controls.

Fixes #5266

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Mark the task you have completed ✅

• I follow CONTRIBUTING GUIDELINE & CODE OF CONDUCT of this project.
• I have performed a self-review of my own code or work.
• I have commented my code, particularly in hard-to-understand areas.
• My changes generate no new warnings.
• I have followed proper naming convention showed in CONTRIBUTING GUIDELINE.
• I have added screenshot for website preview in assets/images.
• I have added entries for my game in GameZone's README.md.
• I have added README.md in my Game folder.
• I have added working video of the game in README.md (optional).
• I have specified the respective issue number for which I have requested the new game.
• I have added my Game to gamesData.json file and it is loading properly on main website as intended.

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Testing Performed

• Tested all ten quiz questions.
• Verified that correct answers increase the score.
• Verified that incorrect answers do not increase the score.
• Confirmed that feedback appears after each answer.
• Confirmed that the progress indicator updates correctly.
• Tested the final results screen and restart button.
• Tested the responsive layout.
• Confirmed that the browser console contains no errors.
• Confirmed that Linux Command Challenge appears in the main GameZone catalog.
• Confirmed that clicking the catalog entry opens the game successfully.

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Add your screenshots (Optional) 📸

Preview screenshot added at:

assets/images/Linux_Command_Challenge.png

The game was also tested from the main GameZone catalog and opened successfully through:

Games/Linux_Command_Challenge/

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[kunjgit]

Thank you @cobie1818 ,for creating the PR and contributing to our GameZone 💗
Review team will review the PR and will reach out to you soon! 😇
Make sure that you have marked all the tasks that you are done with ✅.
Thank you for your patience! 😀