Added the catalogue models and seed to support phase 1 of the POC prototype in the Persistence package.

Packages/Persistence/Sources/Public/Methods/PrepareDB.swift

@@ -22,7 +22,9 @@ public struct PrepareDB: Sendable {
         for fluent: Fluent
     ) async {
         await fluent.migrations.add([
-            CreateExampleRecord()
+            CreateShop(),
+            CreateListing(),
+            SeedCatalogue(),
         ])
     }