refactor: upgrade to Svelte v5 (#212)

* upgrade astro dependencies

* migration to Svelte 5

* Resolution of module version

* fix migrate script error

* fix migrate error comment

* fix Stylus format

* add intellisense for typescript

* Upgrading astrojs/svelte and svelte, and organizing dependencies

* Delete the incorrect settings.

* upgrade astro

* Fixed an error that occurred due to svelte.config.ts using unsupported features.

svelte.config.js

@@ -0,0 +1,5 @@
+import { vitePreprocess } from "@astrojs/svelte";
+
+export default {
+  preprocess: [vitePreprocess({ script: true })],
+};