add documentation which commands are macOS specific

[craastad]

For running CLI tools on asynchronous services, we should mark in CLI tools which commands require macOS/XCode or can be ran on Linux (or Windows?)

My idea, add a tag or line in each of the command documentation that it is macOS specific and/or can be ran on Linux. We need to test the commands and make sure they work on different os. I.e. app-store-connect should be platform independent while xcode-project will surely require macOS.