r2 HTTP Client

The `r2` package is a minimalist, promise-based HTTP client library envisioned as a spiritual successor to the popular `request` package. It distinguishes itself by being built primarily upon the browser's Fetch API, with Node.js support provided through shims, resulting in a substantially smaller footprint, particularly for browser environments (e.g., 66KB uncompressed for `r2` versus 2MB for `request` when bundled). The library's API is designed for modern JavaScript development, leveraging `async/await` for asynchronous operations. The current stable version is 2.0.1, released in April 2018. Its release cadence has been effectively halted since then, indicating long-term dormancy. A primary differentiator is its Fetch API-first design, aiming for simplicity and efficiency over feature-rich complexity, making it a lightweight option for basic HTTP interactions.