add multi-line TextareaInput component

src/routes/+page.svelte

@@ -32,6 +32,7 @@
 	import { Time } from '@internationalized/date';
 	import { onMount, type Component } from 'svelte';
 	import ErrorBox from '$lib/ErrorBox.svelte';
+	import TextareaInput from '$lib/TextareaInput.svelte';
 
 	// Lazy-load heavy components
 	let PhoneInput = createLazyComponent(() => import('$lib/PhoneInput.svelte'));
@@ -276,6 +277,12 @@
 	</InputGroup>
 </div>
 
+<div class="component">
+	<p class="title">Multi-line input (textarea)</p>
+
+	<TextareaInput label="Write your message here" />
+</div>
+
 <div class="component">
 	<p class="title">Time Input</p>