icejs Router Plugin

build-plugin-ice-router provides comprehensive routing capabilities for the icejs framework. At its current stable version 2.1.3, it supports both convention-based routing, automatically generating routes from the `src/pages` directory structure, and configuration-based routing, allowing developers to define routes explicitly in `src/routes.[ts|js]`. Key differentiators include built-in support for nested layouts (using `_layout.tsx`), dynamic route parameters (e.g., `/$uid.tsx` for `/app/:uid`), and optional dynamic parameters (`/$uid$.tsx` for `/app/:uid?`). It also offers dedicated features for global layouts via `src/layouts/index.tsx` and 404 error pages via `src/pages/404.tsx`. This plugin is primarily associated with the icejs v2 ecosystem. The broader Alibaba/ICE framework has evolved to `@ice/app` in v3, which introduces a potentially different plugin system and core architecture. Users should be aware of this version distinction when integrating, as `build-plugin-ice-router` targets icejs v2.