Add a basic API and rudimentary frontend for node graph layers (#846)

* Node graph API stub

* Rename and fix SetInputValue

* Get list of links from network

* Test populating node graph UI

* Node properties

* Fix viewport bounds

* Slightly change promise usage

* A tiny bit of cleanup I did while reading code

* Cleanup and work towards hooking up node links in Vue template

* Add the brighten colour node

* Run cargo fmt

* Add to and from hsla

* GrayscaleImage node with small perf improvement

* Fix gutter panel resizing

* Display node links from backend

* Add support for connecting node links

* Use existing message

* Fix formatting error

* Add a (currently crashing) brighten node

* Replace brighten node with proto node implementation

* Add support for connecting node links

* Update watch dirs

* Add hue shift node

* Add create_node function to editor api

* Basic insert node UI

* Fix broken names

* Add log

* Fix positioning

* Set connector index to 0

* Add properties for Heu shift / brighten

* Allow deselecting nodes

* Redesign Properties panel collapsible sections

Co-authored-by: Keavon Chambers <keavon@keavon.com>
Co-authored-by: Dennis Kobert <dennis@kobert.dev>

node-graph/graph-craft/src/document/value.rs

@@ -10,6 +10,7 @@ use dyn_any::{DynAny, Upcast};
 pub enum TaggedValue {
 	String(String),
 	U32(u32),
+	F32(f32),
 	//Image(graphene_std::raster::Image),
 	Color(graphene_core::raster::color::Color),
 }
@@ -19,6 +20,7 @@ impl TaggedValue {
 		match self {
 			TaggedValue::String(x) => Box::new(x),
 			TaggedValue::U32(x) => Box::new(x),
+			TaggedValue::F32(x) => Box::new(x),
 			TaggedValue::Color(x) => Box::new(x),
 		}
 	}