Footer

[oklena]

• React Component
• Email subscription implementation - when "Sign up" button is clicked, the email should be added to a google form. Example: https://github.com/coding-allies/coding-allies-site/pull/15/files @oklena
• UI design implementation @z-mojomoji

[z-mojomoji]

Ui design implementation for footer (not including the hover on social button) is complete from this PR --> #17