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

database/migrations/006_create_availability_table.sql

@@ -0,0 +1,16 @@
+-- Migration: Create band_availability table
+-- Created: 2025-12-02
+
+CREATE TABLE IF NOT EXISTS band_availability (
+    id INT AUTO_INCREMENT PRIMARY KEY,
+    band_id INT NOT NULL,
+    date DATE NOT NULL,
+    is_available BOOLEAN DEFAULT TRUE,
+    notes VARCHAR(255),
+    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
+    updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
+    FOREIGN KEY (band_id) REFERENCES bands(id) ON DELETE CASCADE,
+    UNIQUE KEY unique_band_date (band_id, date),
+    INDEX idx_band_id (band_id),
+    INDEX idx_date (date)
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;