Initial commit: Børnetime app scaffold

FastAPI + Celery + Svelte app for English→Danish video translation
with voice cloning. Includes diarization, STT, translation, TTS,
and audio mixing pipeline.

frontend/src/main.js

@@ -0,0 +1,8 @@
+import App from './App.svelte';
+import { mount } from 'svelte';
+
+const app = mount(App, {
+  target: document.getElementById('app'),
+});
+
+export default app;