franc-cli: Language Detection CLI

franc-cli is a command-line interface (CLI) tool for detecting the natural language of textual input. It acts as a convenient shell wrapper around the core `franc` library, which supports identifying over 180 languages, including various scripts and dialects. The current stable version for `franc-cli` is 8.0.0, which corresponds to breaking changes introduced in `franc` library versions 6.x.x. The project generally follows the `franc` library's release cadence, with updates often driven by new Unicode versions or improvements in language detection models. Its key differentiator is providing quick, direct command-line access to language detection without requiring programmatic integration, making it suitable for shell scripting, data processing pipelines, and rapid prototyping. It is an ESM-only package, requiring Node.js version 12 or higher for execution.