[Feat]: adding dark mode

[Chitrakadyan2005]

Is there an existing issue for this?

• I have searched the existing issues

Feature Description

Currently, the website only supports a light theme, which may strain the eyes of users, especially during nighttime use. To improve user experience, it would be beneficial to add a dark mode feature that users can toggle as per their preference.

please assign it to me under GSSOC'24EXTD,hacktoberfest'24 and level labels.
@Tejashri-Taral

Use Case

A user accesses the website late at night and finds the bright light theme straining on their eyes. They locate the "Dark Mode" toggle in the navbar and switch it on, which instantly transforms the website to a darker theme, making it easier on their eyes. They continue browsing the website comfortably without discomfort. When they revisit the site later, the dark mode remains enabled, offering a consistent user experience.

Benefits

Enhances user comfort and readability in low-light conditions.
Provides a modern look to the website.
Offers users a choice to customize their viewing experience.

Priority

High

Agreements

• I agree to follow this project's Code of Conduct
• I'm a GSSoC contributor
• I'm a Hacktoberfest contributor
• I want to work on this issue
• I'm willing to provide further clarification or assistance if needed.

[github-actions]

Thank you for creating this issue! 🎉 Your issue will soon be reviewed by either the PA or a mentor. Please note that Level 1 is temporary and can be changed during the review. In the meantime, please make sure to provide all the necessary details and context. If you have any questions or additional information, feel free to add them here. Your contributions are highly appreciated! 😊

You can also check our CONTRIBUTING.md for guidelines on contributing to this project.

[manastiwari99]

I would like to work on this issue. Could you please assign me this task