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

entries/assaultcube.md

@@ -0,0 +1,16 @@
+# AssaultCube
+
+_Shooter game, based on the CUBE engine._
+
+- Home: https://assault.cubers.net/, https://sourceforge.net/projects/actiongame/ (old)
+- State: mature, inactive since 2018
+- Platform: Windows, Linux, macOS
+- Keywords: action, first person, inspired by CUBE engine, shooter
+- Code repository: https://github.com/assaultcube/AC.git
+- Code language: C, C++
+- Code license: Custom (zlib like)
+- Code dependencies: SDL
+
+## Building
+
+- Build system: Make