OS Module API Shim

The `os-shim` package provides a compatibility layer for the native Node.js `os` module API, backporting features that became standard in Node.js 0.10.x to much older versions, specifically 0.4.x and 0.8.x. It shims functions like `os.tmpdir()`, `os.endianness()`, `os.platform()`, `os.arch()`, and the `os.EOL` constant, which were either missing or had differing behaviors in those legacy environments. The package is currently at version 0.1.3 (last updated circa 2013) and has an abandoned release cadence, meaning it is no longer actively maintained. Its primary differentiator was enabling consistent `os` module usage across deeply antiquated Node.js runtimes where standard `os` module features were inconsistent or absent.