feat(altcha): add altcha validation layer to login

src/Altcha/Form/AltchaModel.php

@@ -0,0 +1,39 @@
+<?php
+
+namespace App\Altcha\Form;
+
+use Symfony\Component\Validator\Constraints as Assert;
+
+class AltchaModel
+{
+    /**
+     * @Assert\NotBlank()
+     * @Assert\Regex("/^(SHA-1|SHA-256|SHA-512)$/")
+     */
+    public string $algorithm;
+
+    /**
+     * @Assert\NotBlank()
+     */
+    public string $challenge;
+
+    /**
+     * @Assert\NotBlank()
+     */
+    public string $salt;
+
+    /**
+     * @Assert\NotBlank()
+     */
+    public int $number;
+
+    /**
+     * @Assert\NotBlank()
+     */
+    public string $signature;
+
+    /**
+     * @Assert\NotBlank()
+     */
+    public int $took;
+}