KAN-51: add isolated Tauri macOS app scaffold

native/ui/main.js

@@ -0,0 +1,9 @@
+import { en } from './locales/en.js';
+
+for (const element of document.querySelectorAll('[data-i18n]')) {
+    element.textContent = en[element.dataset.i18n];
+}
+
+document.querySelector('#appearance').addEventListener('change', (event) => {
+    document.documentElement.dataset.appearance = event.target.value;
+});