feat(components): create footer

[elayildiz]

Description

Created a footer across all pages, with a sitemap from anywhere on the site, contact info and social links.

Closes #54

Type of change

• New feature (non-breaking change which adds functionality)

How Has This Been Tested?

• Manual testing (requires screenshots or videos)

Test.mov

Checklist before requesting a review

• My code follows the style guidelines of this project
• I have commented my code in hard-to-understand areas
• I have made corresponding changes to the documentation if needed
• I've requested a review from another team member

[aleckshen]

Some changes that need to be made, not anything major though, the footer looks great Ela! We also need to worry about responsiveness for the footer, but we can address that in another issue when we get the mobile design 👍