docs: 添加徽章

Signed-off-by: YdrMaster <ydrml@hotmail.com>

Author: YdrMaster

README.md

@@ -1,5 +1,15 @@
 # learning in camp
 
+[![CI](https://github.com/LearningInfiniTensor/learning-in-camp/actions/workflows/build.yml/badge.svg?branch=main)](https://github.com/LearningInfiniTensor/learning-in-camp/actions)
+[![license](https://img.shields.io/github/license/LearningInfiniTensor/learning-in-camp)](https://mit-license.org/)
+![GitHub repo size](https://img.shields.io/github/repo-size/LearningInfiniTensor/learning-in-camp)
+![GitHub code size in bytes](https://img.shields.io/github/languages/code-size/LearningInfiniTensor/learning-in-camp)
+
+[![GitHub Issues](https://img.shields.io/github/issues/LearningInfiniTensor/learning-in-camp)](https://github.com/LearningInfiniTensor/learning-in-camp/issues)
+[![GitHub Pull Requests](https://img.shields.io/github/issues-pr/LearningInfiniTensor/learning-in-camp)](https://github.com/LearningInfiniTensor/learning-in-camp/pulls)
+![GitHub contributors](https://img.shields.io/github/contributors/LearningInfiniTensor/learning-in-camp)
+![GitHub commit activity](https://img.shields.io/github/commit-activity/m/LearningInfiniTensor/learning-in-camp)
+
 Opencamp 训练营通用学习工具。
 
 ## 环境准备