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

entries/open_surge.md

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+# Open Surge
+
+_Inspired by the "Sonic the Hedgehog" universe._
+
+- Home: http://opensurge2d.org/, http://opensnc.sourceforge.net/home/index.php, http://opensnc.sourceforge.net/forum/index.php, https://sourceforge.net/projects/opensnc/
+- State: beta
+- Download: http://opensnc.sourceforge.net/forum/viewtopic.php?id=1931, http://opensnc.sourceforge.net/home/download.php
+- Keywords: action, 2D, clone, inspired by Sonic the Hedgehog, platform
+- Code repository: https://github.com/alemart/opensurge.git, https://svn.code.sf.net/p/opensnc/code/ (svn)
+- Code language: C
+- Code license: GPL-3.0 (was GPL-2.0)
+- Code dependencies: Allegro
+
+Renamed from Open Sonic to Open Surge in 2011.
+
+## Building
+
+- Build system: CMake