Add note about mounting WebDAV after server is listening

[simonsan]

I think we should add a message like "please open or mount the served webdav using something like dav://localhost:8000". Unfortunately the last two [INFO] message come from the http server framework we are using, so nothing under our control..

I wouldn't try to open something directly - this makes it again very much platform dependent and users may have different preferences. But adding some text to the docu that users have to manually open/mount the webdav service may be also good!

Originally posted by @aawsome in rustic-rs/rustic#1029 (reply in thread)

[kapitainsky]

Please note that on macOS you can not mount dav://localhost:8000

but http://[::1]:8000 or http://localhost:8000 directly from Finder (file browser).

Go -> Connect to server -> http://localhost:8000 -> acknowledge that you are ok using non secure connections -> choose Guest user -> Connect