Add multilingual language and systems learning tracks

ceb/csharp-practice-20261101/lesson-1/main.cs

@@ -0,0 +1,11 @@
+using System;
+using System.Collections.Generic;
+class Program {
+
+    static void Main() {
+        int[] minutes = {1, 2, 3};
+        int total = 0;
+        foreach (int value in minutes) total += value;
+        Console.WriteLine(total);
+    }
+}