Create README.md

Author: G00293495

README.md

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+Functionality: 
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+Manages user registration, login, and profile updates. 
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+Implements role-based access control for different user roles (e.g., admin, user). 
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+Key Components: 
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+BookingController: Exposes booking management APIs. 
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+BookingEventPublisher: Sends booking-related events to RabbitMQ. 
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+ 
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+Database: 
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+Maintains booking details, linked with user and payment services