[Doc Feature] [4106071 & 4106072] [Android & iOS] Self-Serve Lightweight Audit Tool] (#13376)

* Update teams-mobile-best-practices.md

* Update teams-mobile-best-practices.md

* Update teams-mobile-best-practices.md

* Adding images

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* PR warnings

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* Customer review

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* self-review

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* Addressed PM comments on draft

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* Update app-audit-report-app-package.png

* Date

* Update bot-sso-code.md

* Revert "Update bot-sso-code.md"

This reverts commit 8a83f79.

* Update teams-mobile-best-practices.md

* Update whats-new.md

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* Update whats-new.md

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* Update teams-mobile-best-practices.md

Author: SukanyaDas-MSFT