Added query validator

Author: stelin

src/Request.php

@@ -79,6 +79,11 @@ class Request extends PsrRequest implements ServerRequestInterface
      */
     private $parsedBody;
 
+    /**
+     * @var array
+     */
+    private $parsedQuery = [];
+
     /**
      * @var array
      */
@@ -346,6 +351,27 @@ public function getParsedBody()
         return $this->parsedBody;
     }
 
+    /**
+     * @return array
+     */
+    public function getParsedQuery(): array
+    {
+        return $this->parsedQuery;
+    }
+
+    /**
+     * @param array $query
+     *
+     * @return Request
+     */
+    public function withParsedQuery(array $query)
+    {
+        $clone = clone $this;
+
+        $clone->parsedQuery = $query;
+        return $clone;
+    }
+
     /**
      * @param string $key
      * @param mixed|null   $default