Hot fix resolution - version 2.1.12

A player helped pointing out the bug with resolution changing results in disappear UI and the game didn't un-pause after the option window closed so this is our top priority to send a hot fix.

Aside from that, I'll list all the change that worth being mentioned here:

• Fix the audio volume setting and some other options didn't get saved.

• Fix rollur's AI sometimes try to roll to a nonsense position.

• Balance the Hijacked game mode, you can now use another robot to stand next to the hijacked one to take the hijacker from him/her/apache. In the easier battle, the enemy in this mode will also only have 4 robots max since having the hijacked robot is already a big disadvantage.