Devlog 11

This is a bigger update than usual.

1. I added pong so now you can play pong in KuuppaOS!
2. Calendar now scales better on smaller screens.
3. Settings and calendar buttons now have a hover effect.
4. I added a minimize button!! Open and minimized apps are now in taskbar.
5. I added closing and opening animations.
6. Calculator now looks better.
7. I added a rubber band selector (the funny blue box that comes up when you hold and drag your mouse on the desktop)!
8. I also fixed some bugs.
   (AI used for debugging)

Soon I will add an app store!