Webpack Build and Dev Server Tool

webpack-tool is a utility library designed to streamline webpack development and production builds, integrating a Koa-based development server with hot module replacement and a production build mechanism that can optionally display a build result UI. It ties its major version releases directly to webpack's major versions (e.g., `webpack-tool@5.x.x` for `webpack@5`). This approach provides a consistent experience for developers working with specific webpack versions. Key differentiators include its built-in Koa dev server, which offers `before` and `after` hooks for custom middleware integration, a proxy configuration, and a history API fallback. It aims to simplify the boilerplate often associated with setting up webpack for both development and production environments, providing a consolidated API for `server` (development) and `build` (production) commands, along with a debug UI for build results.