docs: tutorial for packaging and installing a plugin bundle

Adds docs/user/develop/basic/publish.md (+ zh pair, website entry) to the
basics path: the bundle-vs-profile manifest split, dsh plugin add into a
profile, the five-layer loading order, and the GitHub-install build-script
catch — git specs ship sources, so the author owns a self-contained prepare
script and the user owns an allowBuilds allowance that is install-time code
execution; built tarballs and npm need neither.

docs/user/develop/basic/config.zh.md

@@ -101,5 +101,6 @@ export interface Config {
 
 ## 下一步
 
+- [打包与安装插件](./publish.md) — 把插件以可安装包的形式交付
 - [插件与生命周期](../framework/) — 深入了解插件的完整生命周期
 - [服务与依赖](../framework/service.md) — 让你的插件对外提供服务