bootstrap SFTP subsystem

bin/cluelesshd-sftp-server/src/main.rs

@@ -0,0 +1,17 @@
+use eyre::Result;
+use tracing::info;
+use tracing_subscriber::EnvFilter;
+
+fn main() -> Result<()> {
+    let env_filter =
+        EnvFilter::try_from_env("SFTP_LOG").unwrap_or_else(|_| EnvFilter::new("debug"));
+
+    tracing_subscriber::fmt()
+        .with_writer(std::io::stderr)
+        .with_env_filter(env_filter)
+        .init();
+
+    info!("mroooow!");
+
+    Ok(())
+}