renamed games folder to entries folder (also contained frameworks, libraries, ...) and added to the backlog

entries/the_ur-quan_masters.md

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+# The Ur-Quan Masters
+
+_The Ur-Quan Masters (or UQM) project ports Star Control II to modern operating systems._
+
+- Home: http://sc2.sourceforge.net/, https://sourceforge.net/projects/sc2/
+- Media: https://en.wikipedia.org/wiki/Star_Control_II#The_Ur-Quan_Masters
+- State: mature, inactive since 2011
+- Download: http://sc2.sourceforge.net/downloads.php
+- Keywords: strategy, inspired by Star Control 2, remake, turn-based
+- Code repository: https://git.code.sf.net/p/sc2/uqm, https://gitlab.com/osgames/uqm.git (+)
+- Code language: C
+- Code license: GPL-2.0
+
+See also [Ur-Quan Masters HD](https://sourceforge.net/projects/urquanmastershd/)
+
+## Building
+
+- Build system: Make