Add colored terminal output

[jayDevCodes]

Highlight the searched word in the output using colors.
This will improve readability when searching large files.

[7pratyush]

Hi @jayDevCodes! I'm a CS student and I'd like to work on this. May I be assigned to this?

[jayDevCodes]

Thanks for volunteering — that's great!

Please go ahead and work on this. Could you:

1. Create a branch named feature / colored-output.
2. Push a draft PR when you have a basic implementation so I can review.
3. Mention this issue number in the PR description.

I've added the help wanted and in progress labels and will assign you to this issue. Let me know if you need any setup help. 🙂