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

entries/3d_pong.md

@@ -0,0 +1,15 @@
+# 3D Pong
+
+_Three dimensional sports game._
+
+- Home: http://www.newbreedsoftware.com/3dpong/
+- State: beta, inactive since 2004
+- Platform: Linux, macOS
+- Keywords: arcade, online
+- Code repository: (see homepage)
+- Code language: C
+- Code license: GPL-2.0
+
+Developer: New Breed Software
+
+## Building