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

Packages/Persistence/Tests/Utils/Extensions/Tag+Constants.swift

@@ -5,4 +5,8 @@ extension Tag {
     @Tag static var enumeration: Tag
     /// Tests exercising a method of the Persistence package.
     @Tag static var method: Tag
+    /// Tests exercising a model of the Persistence package.
+    @Tag static var model: Tag
+    /// Tests exercising a repository of the Persistence package.
+    @Tag static var repository: Tag
 }