Implemented the Account and User models for the DataModel target.

Libraries/Sources/DataModels/Models/Account.swift

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+//
+//  Account.swift
+//  DataModels
+//
+//  Created by Javier Cicchelli on 11/12/2022.
+//  Copyright © 2022 Röck+Cöde. All rights reserved.
+//
+
+public struct Account: Codable {
+    public let username: String
+    public let password: String
+}

Libraries/Sources/DataModels/Models/User.swift

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+//
+//  User.swift
+//  DataModels
+//
+//  Created by Javier Cicchelli on 11/12/2022.
+//  Copyright © 2022 Röck+Cöde. All rights reserved.
+//
+
+import Foundation
+
+public struct User {
+    public let profile: Profile
+    public let rootFolder: RootFolder
+}
+
+// MARK: - Structs
+
+extension User {
+    public struct Profile {
+        public let firstName: String
+        public let lastName: String
+    }
+    
+    public struct RootFolder {
+        public let id: String
+        public let name: String
+        public let lastModifiedAt: Date
+    }
+}