Add the Material 3 Expressive foundation

Colour, shape, type, elevation and motion as tokens and Tailwind
utilities; `php artisan material:scheme`, which generates an app's colour
roles with Google's material-color-utilities (spec 2025); the theme head
script with light, dark and system and its Alpine store; Google Sans Flex;
every Material Symbol (4,135, outlined and filled) drawn by <x-icon>
without blade-icons; all 35 M3 Expressive shapes, ported from androidx, as
<x-shape>; the x-figure directive; the Toasts concern; DesignGuard for
applications' tests; and a showcase with every token, both themes side by
side and an icon search.

Colour utilities are `@theme inline`, so a section with its own
data-theme repaints; without it they resolve once on :root.

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

resources/svg/symbols/filled/delivery_truck_bolt.svg

@@ -0,0 +1 @@
+<svg fill="currentColor" xmlns="http://www.w3.org/2000/svg" viewBox="0 -960 960 960"><path d="M140-560H78q-12 0-17.5-10.5T62-591l100-143q5-6 11.5-4t6.5 10v88h62q12 0 17.5 10.5T258-609L158-466q-5 6-11.5 4t-6.5-10v-88Zm132 400q-50 0-85-35t-35-85q0-25 11.5-47t31.5-38l239-355H310q-17 0-28-11.5T271-760q0-17 11.5-28.5T311-800h359q20 0 32 15t7 34l-26 111h77q19 0 36 8.5t28 23.5l75 99q11 14 14 30.5t0 33.5l-27 133q-3 14-14 23t-25 9h-47q0 50-35 85t-85 35q-50 0-85-35t-35-85H392q0 50-35 85t-85 35Zm8-80q17 0 28.5-11.5T320-280q0-17-11.5-28.5T280-320q-17 0-28.5 11.5T240-280q0 17 11.5 28.5T280-240Zm400 0q17 0 28.5-11.5T720-280q0-17-11.5-28.5T680-320q-17 0-28.5 11.5T640-280q0 17 11.5 28.5T680-240Zm-43-200h193l4-21-74-99h-95l-28 120Z"/></svg>