Function run_watcher

async fn run_watcher<R: Runtime>(
    runtime: R,
    sources: ConfigurationSources,
    modules: Vec<Weak<dyn ReconfigurableModule>>,
    watch_file: bool,
    sighup_stream: impl Stream<Item = ()> + Unpin,
    debounce_interval: Option<Duration>,
) -> Result<()>

Start watching for configuration changes.

Spawned from watch_for_config_changes.