[Feat] add header,footer, switch custom dark mode button with one in navbar in privacy policy

[Riyachauhan11]

Description

theres no header and footer to privacy policy page right now and it has a special customized button to switch to dark mode and back to light mode. I would like to add header and footer and have users switch to dark mode with the option available in header.

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)