Create Codeheat 2016 webpage

This ticket lists the updates, issues, screenshots or screencasts related to Codeheat 2016 webpage. All the above will be documented in this ticket.

Reference: https://github.com/fossasia/2016.codeheat.org

This page inherits the homepage styles in the [reference](https://github.com/fossasia/codeheat.org/issues/359#issue-3149525163).

**TASKS:**

- [x] Add Jury Section with sliding animation
- [x] Add Winner Section with sliding animation
- [x] Add Finalists Section with sliding animation
- [x] Add Mentors Section with sliding animation
- [x] Add Contest Organizers Section with sliding animation
- [x] Screencast of above sections with sliding animation
- [x] [Change the aspect ratio](https://github.com/fossasia/codeheat.org/issues/364#issuecomment-3148505066) of the [three column images](https://github.com/fossasia/codeheat.org/issues/364#issuecomment-3130771556) from rectangular to square