Added Each to std wvc library.

web-view-components/src/main/groovy/groowt/view/component/web/lib/Each.groovy

@@ -0,0 +1,27 @@
+package groowt.view.component.web.lib
+
+import groowt.view.View
+import groowt.view.component.runtime.DefaultComponentWriter
+import org.jetbrains.annotations.Nullable
+
+class Each extends DelegatingWebViewComponent {
+
+    private final Collection items
+    private final @Nullable Closure transform
+
+    Each(Map attr) {
+        items = attr.items
+        transform = attr.transform
+    }
+
+    @Override
+    protected View getDelegate() {
+        return { Writer w ->
+            def cw = new DefaultComponentWriter(w, this.context.renderContext, this.context)
+            items.forEach {
+                cw << (transform ? transform(it) : it)
+            }
+        }
+    }
+
+}