add: some features

add: subscription rewards, register rewards, fix some features

add: loyalty reward system

docs: update README.md to provide comprehensive project overview, key features, technology stack, project structure, and getting started instructions for the Library Management System

feat: restructure backend project, add configuration files, implement authentication, user and book management, and enhance borrowing and subscription features

chore: remove backend project files and configurations for Library Management System

chore: remove LibraryManagement.Frontend project reference from solution

feat: implement authentication and authorization features, add book and user management controllers, and enhance UI for login and registration

feat: update book and user models, enhance subscription management with admin features, and modify connection string

chore: remove frontend project files and configuration

feat: add database schema and seed data for Library Management System

add mvc

add: frontend

add feat: swagger

feat: add user management, book management, categories management, membership management, and borrowing management

feat: authorization

Add project files.

Add .gitattributes, .gitignore, and README.md.