Desktop: Add Eyedropper tool support with native Vello (#3684)

* mostly done

* fix

* kinda works but tilt and flip broken

* fix footprint

Co-authored-by: James Lindsay <78500760+0HyperCube@users.noreply.github.com>

* Code review

* fix cursor hiding

* Remove console.log

---------

Co-authored-by: James Lindsay <78500760+0HyperCube@users.noreply.github.com>
Co-authored-by: Keavon Chambers <keavon@keavon.com>

editor/src/messages/frontend/frontend_message.rs

@@ -1,5 +1,6 @@
 use super::utility_types::{DocumentDetails, MouseCursorIcon, OpenDocument};
 use crate::messages::app_window::app_window_message_handler::AppWindowPlatform;
+use crate::messages::frontend::utility_types::EyedropperPreviewImage;
 use crate::messages::input_mapper::utility_types::misc::ActionShortcut;
 use crate::messages::layout::utility_types::widget_prelude::*;
 use crate::messages::portfolio::document::node_graph::utility_types::{
@@ -253,6 +254,7 @@ pub enum FrontendMessage {
 		multiplier: (f64, f64),
 	},
 	UpdateEyedropperSamplingState {
+		image: Option<EyedropperPreviewImage>,
 		#[serde(rename = "mousePosition")]
 		mouse_position: Option<(f64, f64)>,
 		#[serde(rename = "primaryColor")]

editor/src/messages/frontend/utility_types.rs

@@ -62,3 +62,10 @@ pub enum ExportBounds {
 	Selection,
 	Artboard(LayerNodeIdentifier),
 }
+
+#[derive(Clone, Debug, Default, Eq, PartialEq, serde::Serialize, serde::Deserialize, specta::Type)]
+pub struct EyedropperPreviewImage {
+	pub data: Vec<u8>,
+	pub width: u32,
+	pub height: u32,
+}