This commit updates the check_signing_identities.sh script to search for provisioning profiles in multiple common directories, improving the detection process. Additionally, the README_MAS.md is updated to clarify where provisioning profiles are stored in newer Xcode versions and provides guidance on locating the correct profile for Mac App Store builds. This enhances the overall usability and clarity for developers working with macOS builds.
This commit introduces a new section in the README.md detailing the process for building and signing a macOS package for the Mac App Store. It includes requirements for Apple Developer accounts, a manual setup guide for certificates and provisioning profiles, and a command to build the signed upload package. Additionally, it provides instructions for uploading the package to App Store Connect for review.
