feat/woo template

• Common project files update
• Common project files update
• test suite init
• theme resolver test
• tests for wptheme resolver
• implementation of wp theme resolver
• tests for dir resolver
• chain resolver tests
• dir resolver implementation
• better renderer interface
• fixed chain resolver tests
• chain resolver implementation
• renderer tests
• simple php renderer
• remove php from resolvers. Only PHP renderer can add it
• fix for invalid interface implementation
• view builder
• add output_render method
• chore(readme): more documentation
• chore(readme): more documentation
• feat: add WooTemplateResolver

src/Renderer/SimplePhpRenderer.php

+<?php
+
+namespace WPDesk\View\Renderer;
+
+use WPDesk\View\Resolver\Resolver;
+
+/**
+ * Can render templates
+ */
+class SimplePhpRenderer implements Renderer
+{
+    /** @var Resolver */
+    private $resolver;
+
+    public function __construct(Resolver $resolver)
+    {
+        $this->set_resolver($resolver);
+    }
+
+    /**
+     * @param Resolver $resolver
+     *
+     * @return void|Resolver
+     */
+    public function set_resolver(Resolver $resolver)
+    {
+        $this->resolver = $resolver;
+    }
+
+    /**
+     * @param string $template
+     * @param array|null $params
+     *
+     * @return string
+     */
+    public function render($template, array $params = null)
+    {
+        ob_start();
+        $this->output_render( $template, $params );
+        return ob_get_clean();
+    }
+
+    /**
+     * @param string $template
+     * @param array|null $params
+     */
+    public function output_render($template, array $params = null)
+    {
+        if ($params !== null) {
+            extract($params, EXTR_SKIP);
+        }
+
+        include($this->resolver->resolve($template . '.php'));
+    }
+
+}