Update badges to README file (#5571)

Add badges.

Author: granluo

README.md

@@ -2,15 +2,20 @@
 [![License](https://img.shields.io/cocoapods/l/Firebase.svg?style=flat)](https://cocoapods.org/pods/Firebase)
 [![Platform](https://img.shields.io/cocoapods/p/Firebase.svg?style=flat)](https://cocoapods.org/pods/Firebase)
 
+[![Actions Status][gh-abtesting-badge]][gh-actions]
 [![Actions Status][gh-auth-badge]][gh-actions]
 [![Actions Status][gh-core-badge]][gh-actions]
 [![Actions Status][gh-crashlytics-badge]][gh-actions]
+[![Actions Status][gh-database-badge]][gh-actions]
 [![Actions Status][gh-datatransport-badge]][gh-actions]
 [![Actions Status][gh-dynamiclinks-badge]][gh-actions]
 [![Actions Status][gh-firebasepod-badge]][gh-actions]
 [![Actions Status][gh-firestore-badge]][gh-actions]
+[![Actions Status][gh-functions-badge]][gh-actions]
+[![Actions Status][gh-inappmessaging-badge]][gh-actions]
 [![Actions Status][gh-interop-badge]][gh-actions]
 [![Actions Status][gh-messaging-badge]][gh-actions]
+[![Actions Status][gh-remoteconfig-badge]][gh-actions]
 [![Actions Status][gh-storage-badge]][gh-actions]
 [![Actions Status][gh-symbolcollision-badge]][gh-actions]
 [![Actions Status][gh-zip-badge]][gh-actions]
@@ -275,15 +280,20 @@ Your use of Firebase is governed by the
 [Terms of Service for Firebase Services](https://firebase.google.com/terms/).
 
 [gh-actions]: https://github.com/firebase/firebase-ios-sdk/actions
+[gh-abtesting-badge]: https://github.com/firebase/firebase-ios-sdk/workflows/abtesting/badge.svg
 [gh-auth-badge]: https://github.com/firebase/firebase-ios-sdk/workflows/auth/badge.svg
 [gh-core-badge]: https://github.com/firebase/firebase-ios-sdk/workflows/core/badge.svg
 [gh-crashlytics-badge]: https://github.com/firebase/firebase-ios-sdk/workflows/crashlytics/badge.svg
+[gh-database-badge]: https://github.com/firebase/firebase-ios-sdk/workflows/database/badge.svg
 [gh-datatransport-badge]: https://github.com/firebase/firebase-ios-sdk/workflows/datatransport/badge.svg
 [gh-dynamiclinks-badge]: https://github.com/firebase/firebase-ios-sdk/workflows/dynamiclinks/badge.svg
 [gh-firebasepod-badge]: https://github.com/firebase/firebase-ios-sdk/workflows/firebasepod/badge.svg
 [gh-firestore-badge]: https://github.com/firebase/firebase-ios-sdk/workflows/firestore/badge.svg
+[gh-functions-badge]: https://github.com/firebase/firebase-ios-sdk/workflows/functions/badge.svg
+[gh-inappmessaging-badge]: https://github.com/firebase/firebase-ios-sdk/workflows/inappmessaging/badge.svg
 [gh-interop-badge]: https://github.com/firebase/firebase-ios-sdk/workflows/interop/badge.svg
 [gh-messaging-badge]: https://github.com/firebase/firebase-ios-sdk/workflows/messaging/badge.svg
+[gh-remoteconfig-badge]: https://github.com/firebase/firebase-ios-sdk/workflows/remoteconfig/badge.svg
 [gh-storage-badge]: https://github.com/firebase/firebase-ios-sdk/workflows/storage/badge.svg
 [gh-symbolcollision-badge]: https://github.com/firebase/firebase-ios-sdk/workflows/symbolcollision/badge.svg
 [gh-zip-badge]: https://github.com/firebase/firebase-ios-sdk/workflows/zip/badge.svg