Add an URL for shutting down the server

    There are two ways to use it: Automatically using HOCON and

    dependencies { implementation "io.ktor:ktor-server-host-common:$ktor_version"}

    Installing the feature

    You can manually install the feature, with ShutDownUrl.ApplicationCallFeature and set the shutDownUrl and an exitCodeSupplier:

    2.     // The URL that will be intercepted
    3.     // A function that will be executed to get the exit code of the process
    5. }