upgrade tailwind

* moved to vite plugin for tailwind (it's recommended now)
* removed autoprefixer (v4 uses its own CSS thing now)
* postcss.config.js was used to wire up tailwind and autoprefixer, so
  it's gone
* tailwind.config.ts is gone, because v4 stores config in app.css using
  css variables
* fixed some renamed classes

daemon/web/src/lib/components/ManifestTableRow.svelte

@@ -36,7 +36,7 @@
     }
 </script>
 
-<tr class="{status_row_color} drop-shadow">
+<tr class="{status_row_color} drop-shadow-sm">
     <td class="p-2">{entry.name}</td>
     <td class="p-2">{date_formatter.format(entry.start_time)}</td>
     <td class="p-2"