📝 feat (readme): add badges

Author: Helloyunho

README.md

@@ -1,5 +1,9 @@
 # Swift Fetch
 
+[![Swift 5.5](https://img.shields.io/badge/Swift-5.5-red.svg?style=flat-square&logo=swift)](https://swift.org)
+![Platforms: iOS, macOS, tvOS, watchOS](https://img.shields.io/badge/platforms-iOS%20%7C%20macOS%20%7C%20tvOS%20%7C%20watchOS-lightgray.svg?style=flat-square)
+[![Swift Package Manager Compatible](https://img.shields.io/badge/Swift%20Package%20Manager-compatible-brightgreen.svg?style=flat-square)](https://swift.org/package-manager)
+
 Fetch-like API implementation for Swift for asynchronous HTTP requests with the new `async/await` syntax.
 
 ## Usage