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.

src/components/Search.svelte

@@ -122,4 +122,4 @@ top-20 left-4 md:left-[unset] right-4 shadow-2xl rounded-2xl p-2">
   input:focus {
     outline: 0;
   }
-</style>
+</style>