[Feat]Switch to Dark mode

[Ishika-Gupta06]

Description

User can directly toggle dark mode upon one click.

Screenshots

No response

Checklist

• [X] I have checked the existing issues
• [X] I have read the Contributing Guidelines
• [X] I'm a GSSoC'24-Extd contributor
• [X] I'm a Hacktoberfest'24 contributor
• [X] I am willing to work on this issue (optional)

[github-actions[bot]]

👋 Thank you @Ishika-Gupta06 for raising an issue! We appreciate your effort in helping us improve. Our team will review it shortly. Stay tuned!

[Ishika-Gupta06]

@beRajeevKumar please assign me this under GSsoc-ext, hacktoberfest, & level -1,2,3