chore: establish typed SvelteKit frontend foundation

svelte.config.js

@@ -0,0 +1,12 @@
+import adapter from '@sveltejs/adapter-static';
+import { vitePreprocess } from '@sveltejs/vite-plugin-svelte';
+
+/** @type {import('@sveltejs/kit').Config} */
+const config = {
+  preprocess: vitePreprocess(),
+  kit: {
+    adapter: adapter({ fallback: 'index.html' }),
+  },
+};
+
+export default config;