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

entries/dear_imgui.md

@@ -0,0 +1,14 @@
+# Dear ImGui
+
+_Minimal GUI library for C++._
+
+- Home: https://github.com/ocornut/imgui
+- State: mature
+- Download: https://github.com/ocornut/imgui/releases
+- Keywords: library
+- Code repository: https://github.com/ocornut/imgui.git
+- Code language: C, C++
+- Code license: MIT
+
+## Building
+