Apple Authenitcation

[nikitaame]

Hello! Thanks for providing a wonderful tool!

I've been using the tool and suggested it to some teammates but some of them were uneasy about supplying their Apple credentials. I noticed in the README, there is this snippet about auth with a link, but the link is dead.

The Apple authentication flow is described in [Apple.paw](https://github.com/RobotsAndPencils/XcodesApp/blob/main/Apple.paw), which will allow you to play with the API endpoints that are involved using the [Paw](https://paw.cloud/) app.

Could someone please provide an updated link or refer to a part in the code dealing with the authentication stuff? Would like to continue using this!

[grgar]

Duplicate of #141. PR to add file: #152. Here's the signIn function:

https://github.com/RobotsAndPencils/XcodesApp/blob/3b1254a48eb6fae3c54f61dee15da6961078d214/Xcodes/AppleAPI/Sources/AppleAPI/URLRequest%2BApple.swift#L19