document async clickjacking middleware

Author: amirreza8002

docs/middleware/x_frame_options_middleware.md

@@ -0,0 +1,10 @@
+# AsyncXFrameOptionsMiddleware
+
+it works exactly like django's [XFrameOptionsMiddleware](https://docs.djangoproject.com/en/5.1/ref/middleware/#x-frame-options-middleware)
+except that it's fully async
+
+### Usage:
+remove django's `django.middleware.clickjacking.XFrameOptionsMiddleware` from the `MIDDLEWARE` setting and add
+`django_async_extensions.middleware.clickjacking.AsyncXFrameOptionsMiddleware` in it's place.
+
+**note**: this middleware like other middlewares provided in this package can work alongside sync middlewares, and can handle sync views.