Store Input for Monitor Nodes (#1454)

* Add input storage to monitor_node

* Return input via serialize function

node-graph/interpreted-executor/src/lib.rs

@@ -5,7 +5,6 @@ pub mod node_registry;
 mod tests {
 	use graph_craft::document::value::TaggedValue;
 	use graphene_core::*;
-	use std::borrow::Cow;
 
 	use futures::executor::block_on;
 
@@ -95,7 +94,7 @@ mod tests {
 					0,
 					DocumentNode {
 						name: "id".into(),
-						inputs: vec![NodeInput::ShortCircut(concrete!(u32))],
+						inputs: vec![NodeInput::Network(concrete!(u32))],
 						implementation: DocumentNodeImplementation::Unresolved(NodeIdentifier::new("graphene_core::ops::IdNode")),
 						..Default::default()
 					},