Koa Request ID Middleware

koa-requestid is a lightweight Koa middleware designed to automatically generate and attach a unique request ID to incoming HTTP requests. By default, it uses UUIDv4 for generation and exposes the ID via the `Request-Id` response header, also storing it in `ctx.state.id` for easy access within downstream middleware or route handlers. The current stable version is 2.3.0, with minor updates released periodically based on maintenance needs and dependency updates, as seen in the recent changelogs. Key differentiators include its simplicity, minimal configuration overhead, and the ability to accept custom request IDs from specified request headers or query parameters, which is particularly useful for debugging or tracing across services. Since version 2.0.2, it ships with comprehensive TypeScript definitions, enhancing developer experience for TypeScript-based Koa applications. It is specifically built for Koa applications, leveraging Koa's middleware pattern and context object.