Set up modern PHP MVC project structure for GetYourBand platform

- Implemented clean MVC architecture with Router, Controller, and Model base classes
- Created database migrations for users, bands, bookings, reviews, and availability
- Set up Tailwind CSS with yellow color scheme and modern design
- Added Alpine.js for reactive JavaScript components
- Configured Vite for asset building and hot module replacement
- Created authentication and role-based middleware
- Implemented helper functions and configuration system
- Added comprehensive README with setup instructions
- Configured Apache with proper rewrite rules and security headers
- Set up Composer and npm package management with modern dependencies

app/Middleware/RoleMiddleware.php

@@ -0,0 +1,19 @@
+<?php
+
+namespace App\Middleware;
+
+class RoleMiddleware
+{
+    public function handle($role = null): void
+    {
+        if (!isset($_SESSION['user'])) {
+            header('Location: /login');
+            exit;
+        }
+
+        if ($role && $_SESSION['user']['role'] !== $role) {
+            http_response_code(403);
+            die('403 - Forbidden');
+        }
+    }
+}