Experiment with SaaS Gitlab OSX Runners

I'm going to put this on hold, but gathered up some information on this.

Here's information on the shared runners that GitLab provides. https://docs.gitlab.com/ee/ci/runners/saas/macos_saas_runner.html

Thankfully, they come pre-installed with lots of software that we need, Flutter for example and fastlane. Here's information on all of that: https://gitlab.com/gitlab-org/ci-cd/shared-runners/images/job-images/-/blob/main/toolchain/macos-14.yml

Various other links and examples for CI/CD and Flutter and Fastlane and Testflight and.... well, so much.

https://developer.apple.com/testflight/

https://about.gitlab.com/blog/2023/06/07/ios-cicd-with-gitlab/

https://docs.fastlane.tools/getting-started/ios/setup/

https://gitlab.com/gitlab-org/incubation-engineering/mobile-devops/demo-projects/ios-demo/-/tree/main/fastlane

https://gitlab.com/gitlab-org/incubation-engineering/mobile-devops/demo-projects/ios-demo/-/blob/main/.gitlab-ci.yml

https://gitlab.com/gitlab-org/incubation-engineering/mobile-devops/demo-projects/flutter-demo/-/blob/master/.gitlab-ci.yml?ref_type=heads

https://gist.github.com/WahdanZ/a0aad03567328c42a729bb5d1f3dc4db

https://medium.com/kinandcartacreated/setup-a-flutter-ci-cd-with-gitlab-ci-part-5-26ab03f3190

https://appditto.com/blog/automate-your-flutter-workflow