Add sequence diagram for catalog

src/main/asciidoc/models/design/seq_catalog.puml

@@ -0,0 +1,56 @@
+@startuml
+' participant Administrator
+participant User
+participant Catalog
+participant Inventory
+participant Salespoint
+participant Spring
+
+== List Products for events of type ==
+
+User -> Catalog : catalog(type)
+activate User 
+activate Catalog
+Catalog -> Catalog : type == 'EVENTCATERING' ? rentableCatalog.findByType(type)
+Catalog -> Catalog : type != 'RENT_A_COOK' ? consumableCatalog.findByType(type)
+Catalog -> Spring : type == 'EVENTCATERING' ? addAttribute(rentables_of_type)
+activate Spring
+Catalog <-- Spring
+deactivate Spring
+Catalog -> Spring : type != 'RENT_A_COOK' ? model.addAttribute(consumables_of_type)
+activate Spring
+Catalog <-- Spring
+deactivate Spring
+Catalog -> Spring : model.addAttribute(type)
+activate Spring
+Catalog <-- Spring
+deactivate Spring
+User <-- Catalog : catalog.html
+deactivate Catalog
+
+== Show product details ==
+
+User -> Catalog : detail(id)
+activate Catalog
+Catalog -> Inventory : inventory.findByProductIdentifier(id)
+activate Inventory
+Catalog <-- Inventory : inventoryItem 
+deactivate Inventory
+Catalog -> Salespoint : inventoryItem.getQuantity()
+activate Salespoint
+Catalog <-- Salespoint : quantity 
+deactivate Salespoint
+Catalog -> Spring : model.addAttribute(inventoryItem)
+activate Spring
+Catalog <-- Spring
+deactivate Spring
+Catalog -> Spring : model.addAttribute(quantity)
+activate Spring
+Catalog <-- Spring
+deactivate Spring
+User <-- Catalog : detail.html
+deactivate Catalog
+
+' deactivate User
+
+@enduml