add typescript support in svelte files, .js to .ts

src/lib/components/ui/DeleteIconButton.svelte

@@ -11,7 +11,7 @@
 	}
 </style>
 
-<script>
+<script lang="ts">
 	import { page } from '$app/stores';
 	import Trash from '$lib/icons/Trash.svelte';
 	import Panel from '$lib/components/ui/Panel.svelte';