Sphinx External ToC

Sphinx External ToC is a Sphinx extension that enables a top-down approach to defining the documentation's site-map (Table of Contents) using a single YAML file, typically `_toc.yml`. This contrasts with Sphinx's default bottom-up `toctree` directives spread across multiple reStructuredText files. The library is currently at version 1.1.0 and maintains an active release cadence, providing new features and bug fixes.