Node network subgraph editing (#1750)

* Breadcrumb visualization, nested network consistency, create definitions for Merge internal nodes

* Add index to network inputs, remove imports usage from flatten network

* Replace NodeOutput with NodeInput::Node

* Fully remove imports field, remove unnecessary identity nodes, move Output node to encapsulating network

* Replace previous_outputs with root_node, fix adding artboard/layer to empty network

* Import/Export UI nodes

* Display input/output types dynamically from compiled network

* Add LayerNodeIdentifer::ROOT_PARENT

* Prevent .to_node() on ROOT_PARENT

* Separate NodeGraphMessage and GraphOperationMessage

* General bug fixes with nested networks

* Change layer color, various bug fixes and improvements

* Fix disconnect and set node input for proto nodes and UI export node

* Dashed line to export for previewed node

* Fix deleting proto nodes and nodes that feed into export

* Allow modifications to nodes outside of nested network

* Get network from Node Id parameter

* Change root_node to previous_root_node

* Get TaggedValue from proto node implementation type when disconnecting

* Improve preview functionality and state

* Artboard position and delete children fix

* Name inputs/outputs based on DocumentNodeDefinition or type, fix new artboard/layer insertion

* replace "Link" with "Wire", adjust previewing

* Various bug fixes and improvements

* Modify Sample and Poisson-Disk points, fix incorrect input index and deleting currently viewed node

* Open demo artwork

* Fix opening already upgraded documents and refactor FrontendGraphDataType usages

* Fix deleting within network and other bugs

* Get default node input from compiled network when copying, fix previews, tests, demo artwork

* Code cleanup

* Hide EditorApi and add a comment describing unresolved Import node input types

* Code review

* Replace placeholder ROOT_PARENT NodeId with std::u64::MAX

* Breadcrumb padding

---------

Co-authored-by: Keavon Chambers <keavon@keavon.com>

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

@@ -85,6 +85,8 @@ impl DynamicExecutor {
 
 	pub fn document_node_types(&self) -> ResolvedDocumentNodeTypes {
 		let mut resolved_document_node_types = ResolvedDocumentNodeTypes::default();
+		// TODO: https://github.com/GraphiteEditor/Graphite/issues/1767
+		// TODO: Non exposed inputs are not added to the inputs_source_map, so they are not included in the resolved_document_node_types. The type is still available in the typing_context. This only affects the UI-only "Import" node.
 		for (source, &(protonode_id, protonode_index)) in self.tree.inputs_source_map() {
 			let Some(node_io) = self.typing_context.type_of(protonode_id) else { continue };
 			let Some(ty) = [&node_io.input].into_iter().chain(&node_io.parameters).nth(protonode_index) else {
@@ -206,7 +208,7 @@ impl BorrowTree {
 			ConstructionArgs::Value(value) => {
 				let upcasted = UpcastNode::new(value.to_owned());
 				let node = Box::new(upcasted) as TypeErasedBox<'_>;
-				let node = NodeContainer::new(node);
+				let node: std::rc::Rc<NodeContainer> = NodeContainer::new(node);
 				self.store_node(node, id);
 			}
 			ConstructionArgs::Inline(_) => unimplemented!("Inline nodes are not supported yet"),
@@ -242,7 +244,7 @@ mod test {
 		let mut tree = BorrowTree::default();
 		let val_1_protonode = ProtoNode::value(ConstructionArgs::Value(TaggedValue::U32(2u32)), vec![]);
 		let context = TypingContext::default();
-		let future = tree.push_node(NodeId(0), val_1_protonode, &context); //.await.unwrap();
+		let future = tree.push_node(NodeId(0), val_1_protonode, &context);
 		futures::executor::block_on(future).unwrap();
 		let _node = tree.get(NodeId(0)).unwrap();
 		let result = futures::executor::block_on(tree.eval(NodeId(0), ()));