Migrate backend to Porto architecture and fix minor bugs

- Fully transitioned the backend to the Porto architectural pattern
- Improved code organization and maintainability
- Fixed minor bugs and inconsistencies

database/factories/EducationalGroupFactory.php

@@ -0,0 +1,21 @@
+<?php
+
+namespace Database\Factories;
+
+use Illuminate\Database\Eloquent\Factories\Factory;
+
+class EducationalGroupFactory extends Factory
+{
+    public function definition(): array
+    {
+        return [
+            'title' => $this->faker->words(3, true),
+            'faculty_id' => \App\Models\Faculty::factory(),
+            'education_form_id' => $this->faker->numberBetween(1, 3),
+            'created_at' => $this->faker->dateTimeBetween('-1 year', 'now'),
+            'updated_at' => $this->faker->dateTimeBetween('-1 year', 'now'),
+        ];
+    }
+}
+
+