Replace Footprint/() call arguments with dynamically-bound Contexts (#2232)

* Implement experimental Context struct and traits

* Add Ctx super trait

* Checkpoint

* Return Any instead of DynAny

* Fix send implementation for inputs with lifetimes

* Port more nodes

* Uncomment nodes

* Port more nodes

* Port vector nodes

* Partial progress (the stuff I'm more sure about)

* Partial progress (the stuff that's not compiling and I'm not sure about)

* Fix more errors

* First pass of fixing errors introduced by rebase

* Port wasm application io

* Fix brush node types

* Add type annotation

* Fix warnings and wasm compilation

* Change types for Document Node definitions

* Improve debugging for footprint not found errors

* Forward context in append artboard node

* Fix thumbnails

* Fix loading most demo artwork

* Wrap output type of all nodes in future

* Encode futures as part of the type

* Fix document node definitions for future types

* Remove Clippy warnings

* Fix more things

* Fix opening demo art with manual composition upgrading

* Set correct type for manual composition

* Fix brush

* Fix tests

* Update docs for deps

* Fix up some node signature issues

* Code review

---------

Co-authored-by: Keavon Chambers <keavon@keavon.com>
Co-authored-by: hypercube <0hypercube@gmail.com>

.devcontainer/devcontainer.json

@@ -6,7 +6,7 @@
 		},
 		"ghcr.io/devcontainers/features/node:1": {}
 	},
-	"onCreateCommand": "cargo install cargo-watch wasm-pack cargo-about && cargo install -f wasm-bindgen-cli@0.2.99",
+	"onCreateCommand": "cargo install cargo-watch wasm-pack cargo-about && cargo install -f wasm-bindgen-cli@0.2.100",
 	"customizations": {
 		"vscode": {
 			// NOTE: Keep this in sync with `.vscode/extensions.json`