docs: add README with project overview and badge

Author: lzwjava

README.md

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+# lzwjava.github.io
+
+[![Deploy Jekyll](https://github.com/lzwjava/lzwjava.github.io/actions/workflows/gh-pages.yml/badge.svg?branch=main)](https://github.com/lzwjava/lzwjava.github.io/actions/workflows/static.yml) 
+
+Welcome to my personal blog! Here, I share my thoughts, experiences, and knowledge on various topics.
+
+Please visit [lzwjava.github.io](lzwjava.github.io).
+
+
+