Lay groundwork for adaptive resolution system (#1395)

* Make transform node accept footprint as input and pass it along to its input

use f32 instead of f64 and add default to document node definition

* Add cull node

* Fix types for Transform and Cull Nodes

* Add render config struct

* Add Render Node skeleton

* Add Render Node to node_registry

* Make types macro use macro hygiene

* Place Render Node as output

* Start making DownresNode footprint aware

* Correctly calculate footprint in Transform Node

* Add cropping and resizing to downres node

* Fix Output node declaration

* Fix image transform

* Fix Vector Data rendering

* Add concept of ImageRenderMode

* Take base image size into account when calculating the final image size

* Supply viewport transform to the node graph

* Start adapting document graph to resolution agnosticism

* Make document node short circuting not shift the input index

* Apply clippy lints

node-graph/gcore/src/raster/image.rs

@@ -145,7 +145,7 @@ where
 	/// Flattens each channel cast to a u8
 	pub fn into_flat_u8(self) -> (Vec<u8>, u32, u32) {
 		let Image { width, height, data } = self;
-		assert!(data.len() == width as usize * height as usize);
+		assert_eq!(data.len(), width as usize * height as usize);
 
 		// Cache the last sRGB value we computed, speeds up fills.
 		let mut last_r = 0.;