Would you accept a PR adding PHP bindings? #82

Hi! I built a native PHP extension for anydoc: https://github.com/hosmelq/ext-anydoc

It exposes anydoc's core functionality to PHP, including format detection, conversion from file paths or bytes to Markdown, and conversion to the document model. It is installable through PIE and provides prebuilt binaries for Linux, macOS, and Windows.

Would you be open to a PR adding PHP as a documented binding for anydoc?