Added the catalogue models and seed to support phase 2 of the POC prototype in the Persistence package.

Packages/Persistence/Sources/Internal/Migrations/CreateUser.swift

@@ -0,0 +1,26 @@
+import FluentKit
+
+/// Creates and drops the `users` table backing ``UserRecord``, seeded with the prototype's demo accounts.
+struct CreateUser: AsyncMigration {
+
+    // MARK: Methods
+
+    func prepare(on database: Database) async throws {
+        try await database.schema(UserRecord.schema)
+            .id()
+            .field("email", .string, .required)
+            .field("display_name", .string, .required)
+            .unique(on: "email")
+            .create()
+
+        for account in Seed.accounts {
+            try await UserRecord(email: account.email, displayName: account.displayName).save(on: database)
+        }
+    }
+
+    func revert(on database: Database) async throws {
+        try await database.schema(UserRecord.schema)
+            .delete()
+    }
+
+}