Add faq page

[Sneha123-zudo]

Added a FAQ page.

Issue number

Fixes #56

Video/Screenshots (mandatory)

Checklist:

• [x] I have mentioned the issue number in my Pull Request.
• [x] I have commented my code, particularly in hard-to-understand areas
• [x] I have gone through the contributing.md file before contributing

Additional context:

Please review my pull request as , I had done the changes you said to do.