Theme Style for Kvantum.

Installation: After making sure that you have installed Kvantum, use "Kvantum Manager" from the Utilities menu to install and choose this theme.

You should use the decoration cupertino-kv : https://store.kde.org/p/1185519/

0.4
- update tabs again.

0.3
- update the buttons
- update the tabs.
- others.

0.2
- Fixed the tab separator