Add the snackbar, badges, rich tooltips, alerts, stats and empty states

<x-toast> hosts the snackbar queue for the Toasts concern and
window.materialToast(), one at a time, paused on hover and focus, with
an optional action; it listens from the moment its script loads, so a
toast dispatched before Alpine starts is shown rather than lost.
<x-badge> is M3's dot and count, plus a tonal or outlined status label;
<x-rich-tooltip> is transient or persistent; <x-alert>, <x-stat> and
<x-empty-state> are built from M3's parts.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01V9NnLxnPp8vaaurb3Z1MFy

resources/views/showcase/index.blade.php

@@ -14,5 +14,7 @@
         @include('livewire-material::showcase.sections.icons')
         @include('livewire-material::showcase.sections.buttons')
         @include('livewire-material::showcase.sections.menus')
+        @include('livewire-material::showcase.sections.communication')
+        @include('livewire-material::showcase.sections.progress')
     </main>
 @endsection