Add qpixel

Author: ydakuka

.gitmodules

@@ -875,3 +875,6 @@
 	path = engines/sail
 	url = [email protected]:vinistock/sail.git
 	branch = master
+[submodule "apps/qpixel"]
+	path = apps/qpixel
+	url = [email protected]:codidact/qpixel.git

apps/qpixel

@@ -765,6 +765,10 @@ Main Website for The Odin Project [http://www.theodinproject.com](http://www.the
 Sail is a lightweight Rails engine that brings an admin panel for managing configuration settings on a live Rails app  
 [https://github.com/vinistock/sail](https://github.com/vinistock/sail)
 
+### qpixel
+Q&A-based community knowledge-sharing software [https://codidact.com/](https://codidact.com/)
+[https://github.com/codidact/qpixel](https://github.com/codidact/qpixel)
+
 
 ## Moved/Missing/Deleted Repos
 TODO: check the repos below - moved, renamed or deleted?