Add captcha image generation functionality.

app/Captcha/Dto/Coordinators.php

@@ -0,0 +1,89 @@
+<?php declare(strict_types=1);
+
+namespace App\Captcha\Dto;
+
+final readonly class Coordinators
+{
+    public function __construct(
+        private int $x1,
+        private int $y1,
+        private int $x2,
+        private int $y2,
+        private int $x3,
+        private int $y3,
+        private int $x4,
+        private int $y4
+    ) { }
+
+    /**
+     * lower left x-coordinate
+     * @return int
+     */
+    public function getX1(): int
+    {
+        return $this->x1;
+    }
+
+    /**
+     * lower left y-coordinate
+     * @return int
+     */
+    public function getY1(): int
+    {
+        return $this->y1;
+    }
+
+    /**
+     * lower right x-coordinate
+     * @return int
+     */
+    public function getX2(): int
+    {
+        return $this->x2;
+    }
+
+    /**
+     * lower right y-coordinate
+     * @return int
+     */
+    public function getY2(): int
+    {
+        return $this->y2;
+    }
+
+    /**
+     * upper right x-coordinate
+     * @return int
+     */
+    public function getX3(): int
+    {
+        return $this->x3;
+    }
+
+    /**
+     * upper right y-coordinate
+     * @return int
+     */
+    public function getY3(): int
+    {
+        return $this->y3;
+    }
+
+    /**
+     * upper left x-coordinate
+     * @return int
+     */
+    public function getX4(): int
+    {
+        return $this->x4;
+    }
+
+    /**
+     * upper left y-coordinate
+     * @return int
+     */
+    public function getY4(): int
+    {
+        return $this->y4;
+    }
+}