Done adding the sound effect.

[devikrishna111]

📌 Description

his PR adds sound feedback to the Typing Speed Test application to improve the typing experience and user engagement.
The application now generates automatic typing sounds using the built-in Python winsound module, eliminating the need for external .wav sound files.

Users will hear different sounds for:

• Key presses
• Incorrect keys
• Backspace actions
• Test completion

This enhances responsiveness and provides a more immersive typing experience similar to mechanical keyboard feedback.

🔗 Related Issue

Closes: #42

🛠 Changes Made

• Added sound generation using the Python winsound module
• Implemented sound on each key press
• Added different sound for incorrect keys
• Added backspace key sound
• Added completion sound when test ends
• Bound keyboard events to the typing textbox

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✅ Checklist

• [✅ ] I have tested my changes
• [ ✅ ] My code follows project guidelines
• [ ✅ ] I have linked the related issue

[FOSSCLUB-LBSITW]

Well done!