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

entries/opensage.md

@@ -0,0 +1,14 @@
+# OpenSAGE
+
+_Clone of Command & Conquer: Generals._
+
+- Home: https://opensage.github.io/, http://timjones.io/blog/tags/opensage/
+- State: beta
+- Download: https://github.com/OpenSAGE/OpenSAGE/releases
+- Platform: Windows, Linux, macOS
+- Keywords: strategy, clone, commercial content, game engine, inspired by Command & Conquer: Generals, real time, requires original content
+- Code repository: https://github.com/OpenSAGE/OpenSAGE.git
+- Code language: C#
+- Code license: LGPL-3.0
+
+## Building