Added 10 sec alert and improved UI of Aim Training game

[ShristiiSharma]

PR Description 📜

Summary :

Added a 10 seconds countdown alert to the game. It will keep players informed about the remaining time, helping them manage their strategies and efforts more effectively. Knowing the game is about to end can motivate players to make a final push, potentially leading to higher scores and a more satisfying game experience.
Also enhanced the UI of the game. Enhancing the UI of the game leads to a more immersive, enjoyable, and memorable gaming experience for players.

Fixes #3680

---

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 generates 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 specified the respective issue number for which I have requested the new game.

---

Screenshots 📸

---

Thank you soo much for contributing to our repository 💗

[kunjgit]

Thank you @ShristiiSharma ,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! 😀

[kunjgit]

Thank you @ShristiiSharma , for your valuable time and contribution in our GameZone 💗.
It’s our GameZone, so Let’s build this GameZone altogether !!🤝
Hoping to see you soon with another PR again 😇
Wishing you all the best for your journey into Open Source🚀