Initial Laravel API import

- Complete GGZ Ecademy Laravel backend application
- RESTful API for learning products, members, filters
- Authentication and authorization system
- Database migrations and seeders
- Custom CRUD generator commands
- Email notification system
- Integration with frontend applications

app/Data/Validation/ValidationResult.php

@@ -0,0 +1,40 @@
+<?php
+
+namespace App\Data\Validation;
+
+class ValidationResult
+{
+    private bool $error;
+    private ?string $errorMessage;
+
+    public function __construct(bool $error, ?string $errorMessage = null)
+    {
+        $this->error = $error;
+        $this->errorMessage = $errorMessage;
+    }
+
+    /**
+     * @return void|never
+     */
+    final public function assertIsSuccess(): void
+    {
+        if ($this->isError()) {
+            throw new ValidationException($this->getErrorMessage());
+        }
+    }
+
+    public function isError(): bool
+    {
+        return $this->error;
+    }
+
+    public function isSuccess(): bool
+    {
+        return !$this->isError();
+    }
+
+    public function getErrorMessage(): ?string
+    {
+        return $this->errorMessage;
+    }
+}