feat: add support for multiple event dates in variants

- Updated the FeaturedGroupService to include 'variants.eventDates' in the items query.
- Introduced a BelongsToMany relationship in EventDate for selected variants.
- Modified PurchaseItemResource and PurchaseItemSnapshotFactory to handle multiple event dates for variants.
- Enhanced StartCheckoutService to load event dates for variants.
- Updated TicketGeneratorService to accommodate event dates in ticket generation.
- Created migrations to support multi-value event dates and allow multiple variant values per attribute.
- Adjusted seeders to reflect new event date handling and added new attributes.
- Added tests to ensure correct functionality for multi-date variants and their integration with ticket generation.

app/Domains/Purchase/Resources/PurchaseItemResource.php

@@ -98,14 +98,28 @@ class PurchaseItemResource extends JsonResource
             return [];
         }
 
-        return $variant->definitions
+        $attributes = $variant->definitions
             ->map(fn ($definition): array => [
                 'name' => (string) ($definition->itemAttribute?->attribute?->nombre ?? ''),
                 'value' => $definition->value,
             ])
             ->filter(fn (array $attribute): bool => $attribute['name'] !== '' || $attribute['value'] !== null)
-            ->values()
-            ->all();
+            ->values();
+
+        $eventDates = $variant->relationLoaded('eventDates')
+            ? $variant->selectedEventDates()
+            : collect();
+        if ($eventDates->isNotEmpty()) {
+            $attributes->prepend([
+                'name' => 'Fecha',
+                'value' => $eventDates
+                    ->map(fn ($eventDate): string => $eventDate->date->format('Y-m-d'))
+                    ->values()
+                    ->all(),
+            ]);
+        }
+
+        return $attributes->all();
     }
 
     private function formatMoney(float|int|string|null $amount): string