GitHub has support for cloning a repo and opening a project in Xcode from the home page of a project. Gitlab should do the same.
To support an 'Open in Xcode' button just add button/link from the project's homepage with the scheme
xcode://clone?repo=<URL_encoded_repository>
https://cocoaengineering.com/2018/01/01/some-useful-url-schemes-in-xcode-9/
Steve Moser (e4784ad0) at 09 Nov 15:31
Update _config.yml - Configure relative_links
Steve Moser (746d37bd) at 09 Nov 15:26
Update Gemfile - Add gem 'jekyll-relative-links'
Steve Moser (ea89ddc7) at 09 Nov 15:25
Update _config.yml - Add jekyll-relative-links
Steve Moser (29acf26f) at 09 Nov 15:14
Update _config.yml
Steve Moser (e2e53b6d) at 09 Nov 14:48
Update _config.yml
Steve Moser (f5f66874) at 09 Nov 12:35
Update README.md