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

entries/atrinik.md

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+# Atrinik
+
+_Multiplayer Online Role Playing Game (MORPG) with 2D isometric graphics based on Daimonin and Crossfire._
+
+- Home: https://www.atrinik.org/, https://github.com/atrinik
+- State: mature, inactive since 2016
+- Download: (see home)
+- Keywords: role playing
+- Code repository: https://github.com/atrinik/atrinik.git
+- Code language: C, Python
+- Code license: GPL-2.0
+
+## Building
+
+- Build system: CMake