Carousel added in home page

[poojadas07]

Issue Number

fixes #131

Describe the changes you've made

I added a small carousel containing 3 demo images in the header section of the home page. @Abhishek-kumar09 Please have a look and tell me any changes required.

Checklist

• [x] My code follows the code style of this project.
• [ ] My change requires a change to the documentation.
• [ ] I have updated the documentation accordingly.
• [x] All new and existing tests passed.
• [x] The title of my pull request is a short description of the requested changes.

[Abhishek-kumar09]

That looks good, thanks!