Website - Gamification vault improvements

[DeerstalkerHats]

Gamification vault

1. Add winners on file Github
2. Btn- change to "stay tuned to game X "
3. Create a combo box that shows previous games
4. On the selected previous game page "Gamification1" for example

• Show readme
• The btn in the bottom will link to challenge 1 repo

5. Add countdown on the bottom btn and hero pic (partial design on Figma)

• countdown
• live
• ended, stay tuned for the next Gamification #X