Add the M3 time picker

The dial and input time picker in a modal dialog, with the hour cycle
from the locale, steps, a min and max that may span midnight, and a
landscape layout, ported from Compose.

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

resources/css/material.css

@@ -26,6 +26,7 @@
 @import './components/menu.css';
 @import './components/selection.css';
 @import './components/search.css';
+@import './components/timepicker.css';
 @import './components/tabs.css';
 @import './components/app-bar.css';
 @import './components/toolbar.css';