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/Catalog/Resources/CatalogItemDetailResource.php

@@ -88,6 +88,7 @@ class CatalogItemDetailResource extends JsonResource
             'codigo' => $attribute->codigo,
             'nombre' => $attribute->nombre,
             'is_required' => $attribute->is_required,
+            'allow_multi_select' => $itemAttribute->allow_multi_select,
             'metadata_schema' => $attribute->metadata_schema,
             'type' => $attribute->type->value,
             'options' => $attribute->type === FieldType::EventDate
@@ -155,20 +156,15 @@ class CatalogItemDetailResource extends JsonResource
     /** @return array<string, mixed> */
     private function variantData(Variant $variant): array
     {
-        $values = $variant->definitions
-            ->mapWithKeys(fn ($definition) => [
-                $definition->itemAttribute?->attribute?->codigo => $definition->value,
-            ])
-            ->filter(fn ($value, $key): bool => $key !== null);
-
-        if ($variant->event_date_id !== null) {
-            $values->put('event_date', (string) $variant->event_date_id);
-        }
+        $values = $variant->selectionValues();
+        $eventDates = $variant->selectedEventDates();
 
         return [
             'id' => $variant->id,
             'event_date_id' => $variant->event_date_id,
             'event_date' => $variant->eventDate?->date?->format('Y-m-d'),
+            'event_date_ids' => $eventDates->pluck('id')->values(),
+            'event_dates' => $eventDates->map(fn ($eventDate): string => $eventDate->date->format('Y-m-d'))->values(),
             'stock_tecnico' => $this->variantStock($variant),
             'values' => $values,
         ];