release v1.2.3

This is for user friendly version. add lots features to make it easy use with spa-server !

Features

• admin server export http api to accept files to local file system
• add client to sync local files to admin server（retry support）
• doc about how to use with shell client

add js plugin

• add js wrapper for spa-client
• add example/test frontend repo
• doc about how to use with js client
• release js wrapper to npm.org by cicd (spa-client v0.1.0)

It can be used now!

All features for effecient and fast static web server are finished! 🎉🎉🎉
所有为打造高效、快速静态网页服务器的功能都已实现！🎉🎉🎉