partway towards commands

I got very confused and started mucking about with "spawn" when in fact all I needed was the "inline" extension type in orcx that allows the interpreter to expose custom constants.

orchid-extension/src/ext_port.rs

@@ -1,5 +1,6 @@
 use std::pin::Pin;
 use std::rc::Rc;
+use std::time::Duration;
 
 use futures::future::LocalBoxFuture;
 use futures::{AsyncRead, AsyncWrite};
@@ -8,5 +9,5 @@ pub struct ExtPort {
 	pub input: Pin<Box<dyn AsyncRead>>,
 	pub output: Pin<Box<dyn AsyncWrite>>,
 	pub log: Pin<Box<dyn AsyncWrite>>,
-	pub spawn: Rc<dyn Fn(LocalBoxFuture<'static, ()>)>,
+	pub spawn: Rc<dyn Fn(Duration, LocalBoxFuture<'static, ()>)>,
 }