feat(managed): add blocking managed owner

crates/irtt-client/src/managed/mod.rs

@@ -24,11 +24,15 @@ pub mod legacy {
     pub use super::TargetId;
 }
 
+#[cfg(feature = "tokio")]
+mod blocking;
 #[cfg(feature = "tokio")]
 mod model;
 #[cfg(feature = "tokio")]
 mod task;
 
+#[cfg(feature = "tokio")]
+pub use blocking::*;
 #[cfg(feature = "tokio")]
 pub use model::*;
 #[cfg(feature = "tokio")]