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

entries/cat_mother_dead_justice.md

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+# Cat Mother Dead Justice
+
+_3D-engine (C++/DirectX9) and a fully playable prototype of a 3rd person action/adventure game._
+
+- Home: http://catmother.sourceforge.net/, https://sourceforge.net/projects/catmother/
+- State: beta, inactive since 2003
+- Download: https://sourceforge.net/projects/catmother/files/
+- Keywords: action
+- Code repository: https://gitlab.com/osgames/catmother.git (import of svn), https://svn.code.sf.net/p/catmother/code/ (svn)
+- Code language: C++
+- Code license: 3-clause BSD, GPL-2.0 (not sure which of them actually)
+
+## Building
+