Exframe Common Middleware

The `exframe-middleware` package, currently at version 1.5.5, offers a centralized collection of commonly used middleware functions tailored for both Express.js applications and RabbitMQ RPC services within the broader Exframe ecosystem. Its primary goal is to standardize cross-cutting concerns, such as robust error handling, user authorization, Content Security Policy (CSP) construction, request context building, and consistent API response formatting. Unlike general-purpose middleware libraries, `exframe-middleware` provides specific utilities like `authorizeUser` and `buildExpressRequestContext`, which are designed to integrate seamlessly into an existing Exframe-based microservice architecture. It explicitly uses CommonJS `require()` in its documentation, indicating it was developed with a CJS-first approach. The library promotes consistency and reduces boilerplate across services that require similar operational patterns. Release cadence is not explicitly stated but appears to be stable, with infrequent updates typical for foundational utilities.