convert circleci mac and ios workflows to github actions (#44032)

Summary:
This pull request converts the CircleCI workflows to GitHub actions workflows. This change only inlcudes the mac and ios build and test jobs.

## Changelog:
[Internal] - Migrate iOS to github actions

Pull Request resolved: https://github.com/facebook/react-native/pull/44032

Test Plan:
[Here is the latest workflow run in my fork](https://github.com/robandpdx-org/react-native/actions/runs/8637660560).

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Reviewed By: NickGerleman

Differential Revision: D56581393

Pulled By: cipolleschi

fbshipit-source-id: a806b1a274e3d86c03e66a543360a800187855e4