feat: implement discount and transport features in the quote system

- Added maximum discount settings configurable by the administrator.
- Implemented discount calculations in the quote confirmation process.
- Introduced transport options with associated costs, including handling for exceeding maximum piece limits.
- Updated frontend to display discounts and transport information in the quote summary.
- Created new database migrations for storing discount and transport settings.
- Developed a new Filament page for managing global discount settings.
- Enhanced email templates to include discount and transport details.
- Added tests to ensure proper functionality of discounts and transport calculations.

backoffice/resources/views/emails/preventivo-admin.blade.php

@@ -13,6 +13,13 @@
 **Email:** {{ $preventivo->cliente?->email }}
 **Telefono:** {{ $preventivo->cliente?->telefono ?: '—' }}
 **Prodotti:** {{ $preventivo->items->count() }}
+@if($preventivo->haSconti())
+**Totale parziale:** € {{ number_format($preventivo->subtotale, 2, ',', '.') }}
+**Sconti applicati:** {{ (float) $preventivo->sconto_1 }}% + {{ (float) $preventivo->sconto_2 }}% extra
+@endif
+@if($preventivo->trasporto)
+**Trasporto:** {{ $preventivo->trasporto_etichetta }} — {{ $preventivo->trasportoDaQuantificare() ? 'da quantificare' : '€ '.number_format($preventivo->trasporto_importo, 2, ',', '.') }}
+@endif
 **Totale:** € {{ number_format($preventivo->totale, 2, ',', '.') }}
 
 <x-mail::button :url="$adminUrl">

backoffice/resources/views/emails/preventivo-cliente.blade.php

@@ -16,7 +16,11 @@ indicativo (prezzi IVA esclusa).
 
 Un nostro consulente ti ricontatterà al più presto per finalizzare l'offerta.
 
-**Totale indicativo:** € {{ number_format($preventivo->totale, 2, ',', '.') }}
+**Totale indicativo (IVA esclusa{{ $preventivo->haSconti() ? ', sconti inclusi' : '' }}):** € {{ number_format($preventivo->totale, 2, ',', '.') }}
+@if($preventivo->trasportoDaQuantificare())
+
+{{ $preventivo->notaTrasporto() }}
+@endif
 
 Grazie,<br>
 Il team di Krèios