Implement dynamic table attributes to generalize the graphic-specific Table type (#4050)

* Feature-gate serde derives behind cfg_attr in all runtime node graph type crates

* Refactor Table to move its hard-coded fields into an attributes field

* Encapsulate TableRow/TableRowRef/TableRowMut attribute fields behind accessor methods

* Remove TaggedValue::GraphicUnused

* Refactor Table<T> to use dynamic attributes instead fixed names

* Fix code review soundness concerns

* Add todo work

* Replace row-oriented Table<T> API with column-oriented access

* Fix attribute propagation bugs

---------

node-graph/libraries/wgpu-executor/src/shader_runtime/per_pixel_adjust_runtime.rs

@@ -168,10 +168,10 @@ impl PerPixelAdjustGraphicsPipeline {
 		let mut cmd = device.create_command_encoder(&wgpu::CommandEncoderDescriptor {
 			label: Some(&format!("{name} cmd encoder")),
 		});
-		let out = textures
-			.iter()
-			.map(|instance| {
-				let tex_in = &instance.element.texture;
+		let out = (0..textures.len())
+			.map(|index| {
+				let element = textures.element(index).unwrap();
+				let tex_in = &element.texture;
 				let view_in = tex_in.create_view(&TextureViewDescriptor::default());
 				let format = tex_in.format();
 
@@ -233,12 +233,8 @@ impl PerPixelAdjustGraphicsPipeline {
 				rp.set_bind_group(0, Some(&bind_group), &[]);
 				rp.draw(0..3, 0..1);
 
-				TableRow {
-					element: Raster::new(GPU { texture: tex_out }),
-					transform: *instance.transform,
-					alpha_blending: *instance.alpha_blending,
-					source_node_id: *instance.source_node_id,
-				}
+				let attributes = textures.clone_row_attributes(index);
+				TableRow::from_parts(Raster::new(GPU { texture: tex_out }), attributes)
 			})
 			.collect::<Table<_>>();
 		context.queue.submit([cmd.finish()]);