Desktop: show platform specific window buttons (#3078)

Implement app window button functionality and set platform

frontend/src/messages.ts

@@ -356,10 +356,13 @@ export class UpdatePlatform extends JsMessage {
 	readonly platform!: AppWindowPlatform;
 }
 
-export class UpdateMaximized extends JsMessage {
+export class UpdateWindowState extends JsMessage {
 	readonly maximized!: boolean;
+	readonly minimized!: boolean;
 }
 
+export class CloseWindow extends JsMessage {}
+
 export class UpdateViewportHolePunch extends JsMessage {
 	readonly active!: boolean;
 }
@@ -1741,7 +1744,7 @@ export const messageMakers: Record<string, MessageMaker> = {
 	UpdateLayersPanelControlBarLeftLayout,
 	UpdateLayersPanelControlBarRightLayout,
 	UpdateLayerWidths,
-	UpdateMaximized,
+	UpdateWindowState,
 	UpdateMenuBarLayout,
 	UpdateMouseCursor,
 	UpdateNodeGraphControlBarLayout,

frontend/src/state-providers/app-window.ts

@@ -3,7 +3,7 @@
 import { writable } from "svelte/store";
 
 import { type Editor } from "@graphite/editor";
-import { type AppWindowPlatform, UpdatePlatform, UpdateMaximized, UpdateViewportHolePunch } from "@graphite/messages";
+import { type AppWindowPlatform, UpdatePlatform, UpdateViewportHolePunch, UpdateWindowState } from "@graphite/messages";
 
 // eslint-disable-next-line @typescript-eslint/explicit-function-return-type
 export function createAppWindowState(editor: Editor) {
@@ -20,9 +20,9 @@ export function createAppWindowState(editor: Editor) {
 			return state;
 		});
 	});
-	editor.subscriptions.subscribeJsMessage(UpdateMaximized, (maximized) => {
+	editor.subscriptions.subscribeJsMessage(UpdateWindowState, (updateWindowState) => {
 		update((state) => {
-			state.maximized = maximized.maximized;
+			state.maximized = updateWindowState.maximized;
 			return state;
 		});
 	});