chore(svelte-examples): pull out of lib package (#3363)

* chore(svelte-examples): pull out of lib package

* chore(svelte-examples): cleanup

* chore(examples): add readme files

packages/svelte/svelte.config.js

@@ -1,12 +1,7 @@
 import adapter from '@sveltejs/adapter-auto';
-import { vitePreprocess } from '@sveltejs/kit/vite';
 
 /** @type {import('@sveltejs/kit').Config} */
 const config = {
-  // Consult https://kit.svelte.dev/docs/integrations#preprocessors
-  // for more information about preprocessors
-  preprocess: vitePreprocess(),
-
   kit: {
     adapter: adapter()
   }