Document usage of EDDIE network API
## Description
The Oniro documentation needs to cover how to use EDDIE's networking API in Oniro.
- [x] Discussion on use-cases to be covered between engineering and documentation teams
- [x] Study and reproduce given use-cases and examples from engineering team
- [x] Document how to use EDDIE's networking API in Oniro (e.g. enabling/building, running on target, blueprints)
- [x] Engage with engineering team during review of the documentation to verify
- [x] Merge in documentation repo
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