create contests page

[sakshi-choudhary]

ISSUE #224

Describe the changes you've made

Developed Contests Page.

Describe if there is any unusual behavior (Any Warning) of your code(Write NA if there isn't) NA

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.
• [ ] All new and existing tests passed.
• [x] The title of my pull request is a short description of the requested changes.

PREVIEW of work done

[sakshi-choudhary]

@Abhishek-kumar09 please review.