docs(README): Add reference projects

Author: SWHL

README.md

@@ -89,3 +89,9 @@ if ploted_img is not None:
 <div align="center">
     <img src="https://github.com/RapidAI/RapidLayout/releases/download/v0.0.0/layout_res.png" width="80%" height="80%">
 </div>
+
+
+### 参考项目
+- [PP-Structure](https://github.com/PaddlePaddle/PaddleOCR/blob/133d67f27dc8a241d6b2e30a9f047a0fb75bebbe/ppstructure/layout/README_ch.md)
+- [360LayoutAnalysis](https://github.com/360AILAB-NLP/360LayoutAnalysis)
+- [ONNX-YOLOv8-Object-Detection](https://github.com/ibaiGorordo/ONNX-YOLOv8-Object-Detection)