Update net-im/qTox to 1.12.1

• the port option PLATFORM_EXTENSIONS to reflect the option in CMakeLists.txt for Xorg and screensaver integration. It should be normally "on".
• pkg-message is moved into the main folder
• added LICENSE_FILE
• cmake now installs and compresses icon files

• while here, switch it to DISTVERSION.

PR: 222949
Submitted by: Yuri Victorovich <yuri@rawbw.com> (maintainer)