refactor(svelte): cleanup components

packages/svelte/src/lib/components/UserSelection/UserSelection.svelte

@@ -1,6 +1,6 @@
 <script lang="ts">
   import { useStore } from '$lib/store';
-  import Selection from '$lib/components/Selection/index.svelte';
+  import { Selection } from '$lib/components/Selection';
 
   const { selectionRect, selectionRectMode } = useStore();
 </script>

packages/svelte/src/lib/components/UserSelection/index.ts

@@ -0,0 +1 @@
+export { default as UserSelection } from './UserSelection.svelte';