Add the Spreadsheet panel to inspect node output data (#2442)

* Inspect node ouput stub

* Fix compile error in tests

* Create a table

* Clickable tables

* Add vector data support

* Checkbox to enable the panel

* Remove Instances table ID column; style the spreadsheet

---------

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

editor/src/messages/frontend/frontend_message.rs

@@ -150,6 +150,15 @@ pub enum FrontendMessage {
 	UpdateGraphViewOverlay {
 		open: bool,
 	},
+	UpdateSpreadsheetState {
+		open: bool,
+		node: Option<NodeId>,
+	},
+	UpdateSpreadsheetLayout {
+		#[serde(rename = "layoutTarget")]
+		layout_target: LayoutTarget,
+		diff: Vec<WidgetDiff>,
+	},
 	UpdateImportReorderIndex {
 		#[serde(rename = "importIndex")]
 		index: Option<usize>,