[All hosts](security) Update NAA article to support a walkthrough (#4519

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* Add code sample info

* add NAA SSO samples

* Add missing samples

* Rewrote code to be used as walkthrough if needed.

* Simplify code into one function

* Fix typos

* fix link

* fix console wording

* Apply suggestions from code review

Co-authored-by: Rick Kirkham <Rick-Kirkham@users.noreply.github.com>

* fix based on review feedback

* fix typos

* Update docs/develop/enable-nested-app-authentication-in-your-add-in.md

Co-authored-by: Rick Kirkham <Rick-Kirkham@users.noreply.github.com>

* Updates from review feedback

* fix table

* minor changes from review feedback.

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Co-authored-by: Rick Kirkham <Rick-Kirkham@users.noreply.github.com>