Revived API /api/v1/captcha.

Now a new captcha is created to check for a bot.

app/Models/Captcha.php

@@ -0,0 +1,37 @@
+<?php declare(strict_types=1);
+
+namespace App\Models;
+
+use Illuminate\Database\Eloquent\Factories\HasFactory;
+use Illuminate\Database\Eloquent\Model;
+use Illuminate\Database\Eloquent\Relations\HasMany;
+
+final class Captcha extends Model
+{
+    use HasFactory;
+
+    protected $table = 'captchas';
+
+    /**
+     * The attributes that are mass assignable.
+     *
+     * @var array
+     */
+    protected $fillable = [
+        'uuid',
+    ];
+
+    /**
+     * The attributes that should be hidden for serialization.
+     *
+     * @var array<int, string>
+     */
+    protected $hidden = [
+        'uuid',
+    ];
+
+    public function captchaLogs(): HasMany
+    {
+        return $this->hasMany(CaptchaLog::class);
+    }
+}