feat: add endpoints and logic for retrieving warehouse space usage and status distribution, including SQL queries, models, and service integration

internal/mapper/dashboard_mapper.go

@@ -76,3 +76,20 @@ func ToDomainTopExportedComponent(r db.GetTopExportedComponentsRow) models.TopEx
 		TotalExported:     r.TotalExported,
 	}
 }
+
+func ToDomainStatusDistribution(r db.GetStatusDistributionRow) models.StatusDistributionItem {
+	return models.StatusDistributionItem{
+		Status:        string(r.Status),
+		Count:         r.Count,
+		TotalQuantity: r.TotalQuantity,
+	}
+}
+
+func ToDomainSpaceUsage(r db.GetSpaceUsageRow) models.SpaceUsageItem {
+	return models.SpaceUsageItem{
+		Warehouse:       r.Warehouse,
+		Room:            r.Room,
+		TotalContainers: r.TotalContainers,
+		UsedContainers:  r.UsedContainers,
+	}
+}