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

entries/yamagi_quake_ii.md

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+# Yamagi Quake II
+
+_Remake of Quake 2._
+
+- Home: http://www.yamagi.org/quake2/
+- State: mature
+- Platform: Windows, Linux
+- Keywords: action, inspired by Quake 2, remake, shooter
+- Code repository: https://github.com/yquake2/yquake2.git
+- Code language: C
+- Code license: GPL-2.0
+- Code dependencies: SDL
+
+## Building
+
+- Build system: CMake