feat(desktop): add system tray with clipboard-to-chat support

surfsense_desktop/src/modules/clipboard.ts

@@ -0,0 +1,14 @@
+import { ipcMain } from 'electron';
+import { IPC_CHANNELS } from '../ipc/channels';
+
+let lastClipboardContent = '';
+
+export function setClipboardContent(text: string): void {
+  lastClipboardContent = text;
+}
+
+export function registerClipboardHandlers(): void {
+  ipcMain.handle(IPC_CHANNELS.GET_CLIPBOARD_CONTENT, () => {
+    return lastClipboardContent;
+  });
+}