Deprecate LetNodes in favor of new scope API (#1814)

* WIP

* Start deprecating let nodes

* Replace WasmEditorApi network imports with new Scope input

* Add missing unwrap

* Add #[serde(default)] to scope_injections

* Restructure WasmEditorApi definition to be available as a TaggedValue

* Fix text node

* Use stable toolchain in nix shell again

* Code review

* FIx text node and remove all remaining warnings

* Require executor input to be 'static

---------

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

node-graph/graph-craft/src/graphene_compiler.rs

@@ -13,6 +13,7 @@ impl Compiler {
 		for id in node_ids {
 			network.flatten(id);
 		}
+		network.resolve_scope_inputs();
 		network.remove_redundant_id_nodes();
 		network.remove_dead_nodes(0);
 		let proto_networks = network.into_proto_networks();
@@ -40,3 +41,9 @@ pub type Any<'a> = Box<dyn DynAny<'a> + 'a>;
 pub trait Executor<I, O> {
 	fn execute(&self, input: I) -> LocalFuture<Result<O, Box<dyn Error>>>;
 }
+#[derive(Clone, Debug, PartialEq, serde::Serialize, serde::Deserialize)]
+#[cfg(feature = "wgpu")]
+pub struct CompileRequest {
+	pub networks: Vec<ProtoNetwork>,
+	pub io: wgpu_executor::ShaderIO,
+}