Adds Native SSO Token Exchange Support (https://developer.okta.com/docs/guides/configure-native-sso/main/)

[emanor-okta]

Description:

:seedling: Adds support for EA feature Native SSO Token Exchange

Testing details:

• [X] Verified basic functionality of change
• [ ] Added tests

Other considerations:

• [X] Has security implications
• [ ] Has UX changes

RESOLVES:

N/A

Primary Reviewer(s):

Additional Reviewers:

Security Reviewer(s) (@ okta/rex-team if necessary):

UX Reviewer(s) (if necessary):

[JayNewstrom]

Hi, thanks for the PR. We will review and pull it in if we can. In the meantime, can you sign our CLA?

https://developer.okta.com/cla/

Internal Ref: OKTA-422248

[JayNewstrom]

For anyone interesting in trying out this functionality, we just released the first public beta of a new suite of SDKs here:

• Auth Foundation - https://search.maven.org/artifact/com.okta.kotlin/auth-foundation/0.2.0-BETA/aar
• Web Authentication UI - https://search.maven.org/artifact/com.okta.kotlin/web-authentication-ui/0.2.0-BETA/aar
• OAuth2 - https://search.maven.org/artifact/com.okta.kotlin/oauth2/0.2.0-BETA/aar
• IDX Kotlin - https://search.maven.org/artifact/com.okta.android/okta-idx-kotlin/2.0.0-BETA2/aar

With repos available here:

• https://github.com/okta/okta-mobile-kotlin/releases/tag/0.2.0-BETA
• https://github.com/okta/okta-idx-android/releases/tag/2.0.0-BETA2

The new functionality being focused around TokenExchangeFlow: https://github.com/okta/okta-mobile-kotlin/blob/master/oauth2/src/main/java/com/okta/oauth2/TokenExchangeFlow.kt

We welcome feedback (notes on how to submit feedback in the projects README)

[JayNewstrom]

No plans to merge. Please see the new SDK.