Changes necessary

Add hooks and state to the contact form [FormBody](frontend/src/components/contact/form/FormBody.jsx).
Add an undo option to toasts, and retry option to api toasts

User feed

Likes / comments on user's reviews or comments

Example:

XYZ liked your review
XYZ replied on your comment

Updates on fav courses

Example:

XYZ posted new review to the course ABC123 (If user has ABC123 as a favorite)
Your material / review request has been met, link to the content