tfx-cli: Azure DevOps CLI

CLI for managing Azure DevOps Services (formerly VSTS) and Team Foundation Server extensions, builds, and releases. Current stable version 0.23.1 (2025). Infrequent releases, focused on security updates and Azure DevOps API changes. Unlike azure-devops-cli (az devops), this is a standalone Node.js CLI with no Azure CLI dependency, geared towards extension developers who need to publish, install, and manage marketplace extensions without installing the full Azure CLI.