games/lincity-ng: Update to 2.14.2

Swith to cmake build system.
Remove DOCS option.
Use pkg-plist.
Change master sites to github.
Swith to DISTVERSION.
The patch of Config.cpp is taken from
https://github.com/lincity-ng/lincity-ng/pull/329.

Changelogs:
https://github.com/lincity-ng/lincity-ng/blob/master/CHANGELOG.md