Add ASGIWebDAV to the list of end-user applications (#87)

* Add ASGIWebDAV to the list of servers

* Review

Author: davidbrochart

README.md

@@ -70,6 +70,7 @@ _Real-world applications that run on ASGI._
 
 <!-- sort_by:name -->
 
+- [ASGIWebDAV](https://github.com/rexzhang/asgi-webdav) - An asynchronous WebDAV server implementation. Support multi-provider, multi-account and permission control.
 - [Datasette](https://github.com/simonw/datasette/) - A tool for exploring and publishing data, including ASGI-compatible components and plugins.
 
 ## GraphQL