Add captcha image generation functionality.

app/Captcha/Dto/Symbols.php

@@ -0,0 +1,38 @@
+<?php declare(strict_types=1);
+
+namespace App\Captcha\Dto;
+
+use App\Captcha\Enums\SymbolType;
+
+final readonly class Symbols
+{
+    public function __construct(
+        private array $success,
+        private array $fakes,
+        private SymbolType $type
+    ) { }
+
+    /**
+     * @return array
+     */
+    public function getSuccess(): array
+    {
+        return $this->success;
+    }
+
+    /**
+     * @return array
+     */
+    public function getFakes(): array
+    {
+        return $this->fakes;
+    }
+
+    /**
+     * @return SymbolType
+     */
+    public function getType(): SymbolType
+    {
+        return $this->type;
+    }
+}