Update version and CHANGELOG.md

Update example app firebase versions

Merge pull request amrfarid140#59 from Andre-lbc/main

Updated dependencies.

Link existing user (amrfarid140#47)

* Fix linking account on Android #43

* Released update

Migrate plugin to null safety (amrfarid140#45)

* updated dependencies

* Updated dependencies

* migrated firebase_auth_oauth_platform_interface

* migrated firebase_auth_oauth_web

* migrated firebase_auth_oauth

* updated example

* fixed premature invocation for Firebase.app that's happening before Firebase.initialise() is called

* Update minimum version to iOS 10

* Updated Android to include androidx.browser dependency and added queries to manifest

* published platform_interface

* published web

* published plugin update

* Updated gitignore

Updated pubspec.yaml files to remove author and add flutter version c…

…onstraints

Remove CryptoKit cocoapod in favour of Apple's CryptoKit (amrfarid140#34

)

* Replace CryptoKit with CryptoSwift

* Update lock files

* Remove CryptoSwift dependency and use Apple's CryptoKit

* Increase firebase_auth_oauth plugin version

* Update CHANGELOG.md

Publish 0.2.2

Lazily fetch default Firebase App (amrfarid140#22)

Firebase 0.18 support (amrfarid140#19)

* Updated with latest firebase changes

* Added Creds linking

* Use  User instead of FirebaseUser

* Updated CHANGELOGs

* Updated README

* Added README to root