some more work on api

Pilz.Extensions/Collections/IEnumerableExtensions.cs

@@ -0,0 +1,10 @@
+namespace Pilz.Extensions.Collections;
+
+public static class IEnumerableExtensions
+{
+    public static void ForEach<T>(this IEnumerable<T> @this, Action<T> action)
+    {
+        foreach (var t in @this)
+            action(t);
+    }
+}