Revert "Remove Cocoapods badges. We'll revert this later once we publish our virst pod release"

This reverts commit 51e98a3.

Author: dfed

README.md

@@ -1,6 +1,9 @@
 # swift-async-queue
 [![Swift Package Manager compatible](https://img.shields.io/badge/SPM-compatible-4BC51D.svg?style=flat)](https://github.com/apple/swift-package-manager)
 [![codecov](https://codecov.io/gh/dfed/swift-async-queue/branch/main/graph/badge.svg?token=nZBHcZZ63F)](https://codecov.io/gh/dfed/swift-async-queue)
+[![Version](https://img.shields.io/cocoapods/v/swift-async-queue.svg)](https://cocoapods.org/pods/swift-async-queue)
+[![License](https://img.shields.io/cocoapods/l/swift-async-queue.svg)](https://cocoapods.org/pods/swift-async-queue)
+[![Platform](https://img.shields.io/cocoapods/p/swift-async-queue.svg)](https://cocoapods.org/pods/swift-async-queue)
 
 A queue that enables sending FIFO-ordered tasks from synchronous to asynchronous contexts.