hypha: move libraries to libs/

libs/xen/xencall/examples/version_capabilities.rs

@@ -0,0 +1,11 @@
+use xencall::error::Result;
+use xencall::XenCall;
+
+fn main() -> Result<()> {
+    env_logger::init();
+
+    let call = XenCall::open()?;
+    let info = call.get_version_capabilities()?;
+    println!("{:?}", info);
+    Ok(())
+}