refactor: Update list initialization in DEMA, EMA, SMA, T3, TEMA, TRIMA, and WMA classes for improved readability

test_collection_expr.cs

@@ -0,0 +1,11 @@
+using System;
+using System.Collections.Generic;
+using QuanTAlib;
+
+public class Test
+{
+    public TSeries Create()
+    {
+        return [];
+    }
+}