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

entries/ultrastar_deluxe.md

@@ -0,0 +1,19 @@
+# UltraStar Deluxe
+
+_Karaoke game._
+
+- Home: https://usdx.eu/, https://sourceforge.net/projects/ultrastardx/
+- State: mature
+- Download: https://usdx.eu/downloads/
+- Platform: Windows, Linux, macOS
+- Keywords: music, inspired by Singstar, karaoke, remake
+- Code repository: https://github.com/UltraStar-Deluxe/USDX.git, https://github.com/UltraStar-Deluxe/legacy-sourceforge-svn-mirror.git (+), https://svn.code.sf.net/p/ultrastardx/svn/trunk (svn)
+- Code language: Pascal
+- Code license: GPL-2.0
+- Code dependencies: Lua, SDL2
+
+## Building
+
+- Build system: Lazarus project
+- Build instructions: https://github.com/UltraStar-Deluxe/USDX/blob/master/README.md#5-build-and-run
+