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

entries/batalla_naval.md

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+# Batalla Naval
+
+_Battleship game._
+
+- Home: http://batnav.sourceforge.net/batnav-en.html, https://sourceforge.net/projects/batnav/
+- State: mature, inactive since 2002
+- Download: https://sourceforge.net/projects/batnav/files/
+- Keywords: arcade, multiplayer
+- Code repository: http://batnav.cvs.sourceforge.net (cvs)
+- Code language: C
+- Code license: GPL-2.0
+
+Developer: Ricardo Quesada
+
+## Building
+
+- Build system: Make