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

Packages/Persistence/Sources/Internal/Models/UserRecord.swift

@@ -0,0 +1,55 @@
+import FluentKit
+import Foundation
+
+/// A FluentKit model of a single `users` row.
+final class UserRecord: Model, @unchecked Sendable {
+
+    // MARK: Properties
+
+    static let schema = "users"
+
+    @ID(key: .id)
+    var id: UUID?
+
+    @Field(key: "email")
+    var email: String
+
+    @Field(key: "display_name")
+    var displayName: String
+
+    // MARK: Initializers
+
+    init() {}
+
+    /// Creates a record with the given values.
+    /// - Parameters:
+    ///   - email: the account's normalized email address.
+    ///   - displayName: the name other people see.
+    init(
+        email: String,
+        displayName: String
+    ) {
+        self.email = email
+        self.displayName = displayName
+    }
+
+}
+
+// MARK: - Extensions
+
+extension UserRecord {
+
+    // MARK: Computed
+
+    /// The `Sendable` snapshot of the saved record.
+    var snapshot: User {
+        get throws {
+            .init(
+                id: try requireID(),
+                email: email,
+                displayName: displayName
+            )
+        }
+    }
+
+}