Build native macOS .pkg installer for non-Homebrew users 📦

[HelloPrincePal]

Context 🤔

Once we delete our .sh script, users who do not have Homebrew installed will need a secure way to install DroidTether natively. The standard macOS approach is a .pkg installer that securely handles moving binaries to /usr/local/bin and loading the launchd background services without throwing security flags.

Requirements / Acceptance Criteria 🎯

• Create a pkgbuild script to meticulously wrap the compiled Go binary into a .pkg.
• The .pkg must automatically move the launchdaemon plist to the proper /Library/LaunchDaemons/ folder during installation.
• Automate this .pkg generation in the GitHub Actions Release pipeline so every release drops a .pkg file alongside the standard .tar.gz files.

Resources 📚

• Apple pkgbuild documentation.
• GoReleaser (has excellent native macOS .pkg support built-in!)