chore: add shields

Leeeon233 · Leeeon233 · commit 8d8cb166e48a · 2024-08-12T12:06:29.000+08:00
diff --git a/README.md b/README.md
@@ -1,3 +1,6 @@
+[![](https://img.shields.io/endpoint?url=https%3A%2F%2Fswiftpackageindex.com%2Fapi%2Fpackages%2Floro-dev%2Floro-swift%2Fbadge%3Ftype%3Dswift-versions)](https://swiftpackageindex.com/loro-dev/loro-swift)
+[![](https://img.shields.io/endpoint?url=https%3A%2F%2Fswiftpackageindex.com%2Fapi%2Fpackages%2Floro-dev%2Floro-swift%2Fbadge%3Ftype%3Dplatforms)](https://swiftpackageindex.com/loro-dev/loro-swift)
+
 <h1 align="center">loro-swift</h1>
 
 <p align="center">
