add email signup flow

backend/app/Email/EmailConfirmationToken/EmailConfirmationTokenModel.php

@@ -0,0 +1,42 @@
+<?php
+
+namespace App\Email\EmailConfirmationToken;
+
+use DateTimeImmutable;
+use Illuminate\Database\Eloquent\Attributes\Fillable;
+use Illuminate\Database\Eloquent\Builder;
+use Illuminate\Database\Eloquent\Model;
+
+/**
+ * @property int $id
+ * @property int $user_id
+ * @property string $token
+ * @property DateTimeImmutable $available_to
+ *
+ * @method static Builder<static>|EmailConfirmationTokenModel newModelQuery()
+ * @method static Builder<static>|EmailConfirmationTokenModel newQuery()
+ * @method static Builder<static>|EmailConfirmationTokenModel query()
+ *
+ * @mixin \Eloquent
+ */
+#[Fillable([
+    'user_id',
+    'token',
+    'available_to',
+])]
+class EmailConfirmationTokenModel extends Model
+{
+    protected $table = 'email_confirmation_tokens';
+
+    public $timestamps = false;
+
+    /**
+     * @return array<string, string>
+     */
+    protected function casts(): array
+    {
+        return [
+            'available_to' => 'immutable_datetime',
+        ];
+    }
+}