ignore-sync CLI Tool

ignore-sync is a command-line interface (CLI) tool designed to streamline the management and synchronization of various ignore files, such as `.gitignore`, `.npmignore`, and `.eslintignore`, across projects and repositories. Currently at version 8.0.0, this tool automates the tedious process of composing and maintaining multiple ignore files, which often involves combining patterns from different sources like GitHub's official gitignore templates (e.g., Node.gitignore + macOS.gitignore). Its key differentiator lies in its ability to consolidate ignore patterns from diverse sources—including specific files from GitHub repositories, local files (with optional relative path prefixing), and inline patterns—all configured within a single `*.ignore-sync` file. This approach significantly reduces manual updates, minimizes human error, and ensures consistent ignore rules throughout a development ecosystem. The package is actively maintained, though a specific release cadence isn't published. It targets Node.js environments (`^18.12.0 || >=20.9.0`) and is primarily used via `npm scripts` or `npx`.