Apollo Link HTTP Common Utilities

apollo-link-http-common is an internal utility package within the deprecated `apollo-link` ecosystem, specifically designed to provide shared HTTP functionalities for other Apollo Link packages like `apollo-link-http` and `apollo-link-http-batch`. It extracts common logic for handling HTTP requests and responses, but it is not intended for direct consumption by end-user applications. The package, currently at version 0.2.16, explicitly warns that its API is unstable and versions may not adhere to SemVer, reflecting its role as a rapidly evolving internal component. Since Apollo Client 3.0, the entire `apollo-link` library, including this common utilities package, has been largely deprecated. Its core functionalities have been integrated directly into `@apollo/client/link/http`, making direct use of `apollo-link-http-common` obsolete and actively discouraged. Developers should migrate to the equivalent utilities provided by `@apollo/client` for stable HTTP networking.