cocoaModem macOS 15.7 Automation Fix

Universal macOS build for Apple Silicon and Intel.

Highlights:

• Added Apple Events usage description required for modern macOS Automation permission prompts
• Fixed AppleScript authorization failures when controlling other applications
• Improved runtime error messaging when macOS denies Automation access
• Packaged updated universal release archive

Credit:
Original cocoaModem created by W7AY, Kok Chen.