Implement simple PHP based view renderer

src/View/ViewInterface.php

@@ -0,0 +1,11 @@
+<?php
+
+namespace Ardent\Undercurrent\View;
+
+use Ardent\Undercurrent\AppConfig;
+use Ardent\Undercurrent\Http\ResponseInterface;
+
+interface ViewInterface
+{
+    public function render(AppConfig $config): string;
+}