Allow configuration less mode with local session storage

src/SessionFactory.php

@@ -3,12 +3,13 @@
 namespace Amp\Http\Server\Session;
 
 use Amp\Sync\KeyedMutex;
+use Amp\Sync\LocalKeyedMutex;
 
 final class SessionFactory
 {
     public function __construct(
-        private readonly KeyedMutex $mutex,
-        private readonly SessionStorage $storage,
+        private readonly KeyedMutex $mutex = new LocalKeyedMutex(),
+        private readonly SessionStorage $storage = new LocalSessionStorage(),
         private readonly SessionIdGenerator $idGenerator = new Base64UrlSessionIdGenerator(),
     ) {
     }

src/SessionMiddleware.php

@@ -23,7 +23,7 @@ final class SessionMiddleware implements Middleware
      *      Defaults to {@see Session::class}.
      */
     public function __construct(
-        private readonly SessionFactory $factory,
+        private readonly SessionFactory $factory = new SessionFactory(),
         CookieAttributes $cookieAttributes = null,
         private readonly string $cookieName = self::DEFAULT_COOKIE_NAME,
         private readonly string $requestAttribute = Session::class