Document how to use OpenThread in Oniro

Description

The Oniro documentation needs to cover how to use OpenThread in Oniro.

Discussion on use-cases to be covered between engineering and documentation teams
Study and reproduce given use-cases and examples from engineering team
Document how to use OpenThread in Oniro (e.g. enabling/building, running on target, blueprints)
Engage with engineering team during review of the documentation to verify
Merge in documentation repo

Edited Oct 14, 2022 by Stefan Schmidt

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