Allow https route declaration with 'https' array key and value

Allow https route declaration with 'https' array key and value.
```
$router->group(['https' => true], function (Router $router) {
});
```

src/Routing/Route.php

@@ -511,7 +511,8 @@ public function methods()
      */
     public function httpOnly()
     {
-        return in_array('http', $this->action, true);
+        return in_array('https', $this->action, true)
+            || (array_key_exists('https', $this->action) && $this->action['https']);
     }
 
     /**