krata: begin work on guest message channel

crates/kratart/examples/channel.rs

@@ -0,0 +1,15 @@
+use anyhow::Result;
+use env_logger::Env;
+use kratart::chan::KrataChannelService;
+use xenevtchn::EventChannel;
+use xenstore::XsdClient;
+
+#[tokio::main]
+async fn main() -> Result<()> {
+    env_logger::Builder::from_env(Env::default().default_filter_or("info")).init();
+
+    let mut krata =
+        KrataChannelService::new(EventChannel::open().await?, XsdClient::open().await?)?;
+    krata.init().await?;
+    Ok(())
+}