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-api/src/binary.rs

@@ -69,8 +69,10 @@ pub struct SpawnerBin {
 	pub data: *const (),
 	/// `self`
 	pub drop: extern "C" fn(*const ()),
-	/// `&self` Add a future to this extension's task
-	pub spawn: extern "C" fn(*const (), FutureBin),
+	/// `&self` Add a future to this extension's task after a configurable delay
+	/// measured in milliseconds. By itself, a pending timer never prevents
+	/// extension shutdown.
+	pub spawn: extern "C" fn(*const (), u64, FutureBin),
 }
 
 /// Extension context.