Introduce support for plugin API routes that do not require WebUI authentication. Updates include:
- napcat-onebot: Add apiNoAuth route storage and helpers (apiNoAuth, getNoAuth, postNoAuth, putNoAuth, deleteNoAuth), hasApiNoAuthRoutes, buildApiNoAuthRouter, and clear handling in PluginRouterRegistryImpl.
- napcat-onebot types: Extend PluginRouterRegistry interface with no-auth API methods and document that authenticated APIs remain separate.
- napcat-webui-backend: Mount a new unauthenticated plugin route handler at /plugin/:pluginId/api that looks up the plugin router and dispatches requests to the plugin's no-auth router, returning appropriate errors when context or routes are missing.
- napcat-plugin-builtin: Add example no-auth endpoints (public/info and health) and update logger messages to reflect both auth and no-auth API paths.
- Bump napcat-types version to 0.0.16 and update napcat-plugin-builtin dependency accordingly.
These changes enable plugins to expose public endpoints (e.g. health checks or public metadata) under /plugin/{pluginId}/api/ while keeping existing authenticated APIs under /api/Plugin/ext/{pluginId}/.
Introduce in-memory static file support and inter-plugin exports. Add MemoryStaticFile/MemoryFileGenerator types and expose staticOnMem in PluginRouterRegistry; router registry now tracks memory routes and exposes getters. Add getPluginExports to plugin manager adapters to allow plugins to call each other's exported modules. WebUI backend gains routes to serve /plugin/:pluginId/mem/* (memory files) and /plugin/:pluginId/files/* (plugin filesystem static) without auth. Update builtin plugin to demonstrate staticOnMem and inter-plugin call, and add frontend UI to open extension pages in a new window. Note: API router no longer mounts static filesystem routes — those are handled by webui-backend.
Introduces a plugin router registry for registering plugin-specific API routes, static resources, and extension pages. Updates the plugin manager and context to expose the router, and implements backend and frontend support for serving and displaying plugin extension pages in the WebUI. Also adds a demo extension page and static resource to the builtin plugin.
