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

entries/the_endless_dungeons.md

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+# The Endless Dungeons
+
+_Free random dungeon game RPG (Roguelike)_
+
+- Home: https://sourceforge.net/projects/endlessdungeons/
+- State: mature, inactive since 2015
+- Download: https://sourceforge.net/projects/endlessdungeons/files/
+- Platform: Windows
+- Keywords: role playing
+- Code repository: https://gitlab.com/osgames/endlessdungeons.git (archive of source releases)
+- Code language: C
+- Code license: CC-BY-NC-SA-2.0
+- Code dependencies: Allegro
+- Assets license: CC-BY-NC-SA-2.0
+
+## Building
+