[CLEANUP] Cleaned up code

- Change variable $values to $settings in Route::setSettings method.
- Added return types to methods.
- Added type to method variables.
- Change ClassNotFoundException so required parameters are first.

src/Pecee/SimpleRouter/Router.php

@@ -461,7 +461,7 @@ class Router
      * @throws HttpException
      * @throws \Exception
      */
-    protected function handleRouteRewrite($key, string $url): ?string
+    protected function handleRouteRewrite(string $key, string $url): ?string
     {
         /* If the request has changed */
         if ($this->request->hasPendingRewrite() === false) {
@@ -874,7 +874,7 @@ class Router
      * @param string $name
      * @param array $arguments
      */
-    protected function fireEvents($name, array $arguments = []): void
+    protected function fireEvents(string $name, array $arguments = []): void
     {
         if (\count($this->eventHandlers) === 0) {
             return;