Updated various package dependencies including "next", "turbo" and "@kit" packages. Moved some dependencies to devDependencies for better project structure. This aims to optimize the dependency graph, reduce unnecessary installation of packages, and enhance the overall development environment.
Added implementation for various billing services with Lemon Squeezy. This includes processing of webhooks for order and subscription handling, verification of webhook signatures, and validating subscription statuses and order states. Additionally, types for order and subscription webhooks have been created.
