BUG REPORT No pictures for courses in Course Catalog + Hover Effect

[MadhurimaNayak]

Description

When navigating to the course catalog, there are no images present for the courses. I will add these images for each course and also add hover effect to each card to enhance the UI.

Screenshots

### Additional information I am contributing under GSSOC'24. ### What browser are you seeing this bug on? Chrome ### Checklist - [X] I have checked the existing issues - [X] I have read the Contributing Guidelines - [X] I have read the Code Of Conduct - [X] The changes don't break the code

[shivathmikavemula]

I would like to work on the issue @Muskansahuincredible

[KavyaBS123]

Hey @Muskansahuincredible I am GSSOC contributor can you please assign this issue to me I would be glad to work on it!