add + (plus) button for addition of Vorgaenge and Crimes

src/routes/(angemeldet)/list/+page.svelte

@@ -1,4 +1,5 @@
 <script lang="ts">
+	import ExpandableForm from '$lib/components/ExpandableForm.svelte';
 	import Trash from '$lib/icons/Trash.svelte';
 	import Folder from '$lib/icons/Folder.svelte';
 	import EmptyList from '$lib/components/EmptyList.svelte';
@@ -130,7 +131,9 @@
 	</div>
 </div>
 
-<form class="flex flex-col items-center mt-10 space-y-4" method="POST">
+
+<ExpandableForm>
+<form class="flex flex-col items-center" method="POST">
 	<div class="flex flex-col sm:flex-row sm:space-x-4 w-full max-w-lg">
 		<div class="flex-1">
 			<label for="vorgang" class="block text-sm font-medium leading-6 text-gray-900">
@@ -188,6 +191,8 @@
 	</button>
 </form>
 
+</ExpandableForm>
+
 <style>
 	ul {
 		min-width: 24rem;