Add Beeflang

Fixes #717

Co-Authored-By: Hamdy Abou El Anein <hamdy.aea@protonmail.com>

b/beef.bf

@@ -0,0 +1,12 @@
+using System;
+
+namespace HelloWorld
+{
+    class Program
+    {
+        static void Main()
+        {
+            Console.WriteLine("Hello World");
+        }
+    }
+}