Support Push + Number Challenge

[pcmxgti]

Description

This introduces the ability to display the numerical challenge that can be part of a push challenge.

Related Issue

This addresses the lack of functionality referenced in #107

Motivation and Context

Okta introduced a "Number Challenge" feature that can be combined with a push to enhance security. This may be present in all AUTHn calls, some, or none, depending on the configuration for the Okta Organization.

How Has This Been Tested?

Tested locally with tox and manually against a non-production Okta instance

Types of changes

• New feature (non-breaking change which adds functionality)
• Documentation update

Checklist:

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes

[sevignyj]

lgtm!