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## Summary
<!-- Provide a brief summary of the changes you have made and most
importantly what they aim to achieve -->
I couldn't find the explanation for why this happens but having THClient
as a class variable inside ThreadClientService makes notifications
attachment to not be displayed.
Besides that this PR also clean up some ghosts folders that I created
and forgot to delete and rename THClientService protocol to not have
prefix TH avoiding confusion with Apple prefixes
## Screenshots
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## Link to pull request in Documentation repository
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corresponding pull request in the Companion App Documentation repository
(https://github.com/home-assistant/companion.home-assistant). Please add
the number of this pull request after the "#" -->
Documentation: home-assistant/companion.home-assistant#
## Any other notes
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Request is part of a bigger change, please include it here. -->
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and review of your changes. Please do not delete anything from this
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## Summary
<!-- Provide a brief summary of the changes you have made and most
importantly what they aim to achieve -->
Add screen to list all thread credentials in keychain + transfer to HA.
This screen will also work as a way to visually validate when we start
transferring HA thread credentials in Apple keychain.
## Screenshots
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screenshots in light and dark mode. -->
<img width="2126" alt="Screenshot 2024-02-29 at 11 17 12"
src="https://github.com/home-assistant/iOS/assets/5808343/033ec96d-e8f0-4f91-b1e8-53dd207873e2">
## Link to pull request in Documentation repository
<!-- Pull requests that add, change or remove functionality must have a
corresponding pull request in the Companion App Documentation repository
(https://github.com/home-assistant/companion.home-assistant). Please add
the number of this pull request after the "#" -->
Documentation: home-assistant/companion.home-assistant#
## Any other notes
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Request is part of a bigger change, please include it here. -->
