añadido componente para crear posts y modificado menu auth

src/lib/components/crear-post.svelte

@@ -0,0 +1,34 @@
+<script>
+	import InputGroupAddon from './ui/input-group/input-group-addon.svelte';
+	import InputGroupButton from './ui/input-group/input-group-button.svelte';
+	import InputGroupTextarea from './ui/input-group/input-group-textarea.svelte';
+	import InputGroup from './ui/input-group/input-group.svelte';
+	import ArrowUpIcon from '@lucide/svelte/icons/arrow-up';
+	import Kbd from './ui/kbd/kbd.svelte';
+
+	let mensaje = $state('');
+</script>
+
+<InputGroup>
+	<InputGroupTextarea bind:value={mensaje} maxlength="255" placeholder="Alguna novedad?"
+	></InputGroupTextarea>
+	<!-- <hr class="w-full" /> -->
+	<InputGroupAddon align="block-end" class="bg-">
+		<div class="flex w-full justify-between">
+			<Kbd class="text-sm leading-none font-medium italic">
+				<p class:text-red-500={mensaje.length > 229}>
+					{mensaje.length}
+				</p>
+				/ 255
+			</Kbd>
+			<InputGroupButton
+				variant="default"
+				class="transform rounded-full transition-transform ease-in hover:scale-120"
+				size="xs"
+			>
+				<p>Publicar</p>
+				<ArrowUpIcon />
+			</InputGroupButton>
+		</div>
+	</InputGroupAddon>
+</InputGroup>