add email signup flow

backend/app/Email/EmailConfirmationToken/EmailConfirmationToken.php

@@ -0,0 +1,36 @@
+<?php
+
+namespace App\Email\EmailConfirmationToken;
+
+use App\User\User;
+use DateTimeImmutable;
+
+final readonly class EmailConfirmationToken
+{
+    public function __construct(
+        private int $id,
+        private User $user,
+        private DateTimeImmutable $availableTo,
+        private string $token,
+    ) {}
+
+    public function getId(): int
+    {
+        return $this->id;
+    }
+
+    public function getUser(): User
+    {
+        return $this->user;
+    }
+
+    public function getAvailableTo(): DateTimeImmutable
+    {
+        return $this->availableTo;
+    }
+
+    public function getToken(): string
+    {
+        return $this->token;
+    }
+}