feat: add support for releasing and patching macOS apps

[bryanoltman]

WIP

Description

Adds shorebird release macos and shorebird patch macos

Type of Change

• ✨ New feature (non-breaking change which adds functionality)
• 🛠️ Bug fix (non-breaking change which fixes an issue)
• ❌ Breaking change (fix or feature that would cause existing functionality to change)
• 🧹 Code refactor
• ✅ Build configuration change
• 📝 Documentation
• 🗑️ Chore
• 🧪 Tests

[codecov]

Codecov Report

Attention: Patch coverage is 6.87023% with 122 lines in your changes missing coverage. Please review.

Files with missing lines	Patch %	Lines
...d_cli/lib/src/commands/release/macos_releaser.dart	0.00%	46 Missing ⚠️
...ckages/shorebird_cli/lib/src/artifact_builder.dart	0.00%	33 Missing ⚠️
...ckages/shorebird_cli/lib/src/artifact_manager.dart	0.00%	14 Missing ⚠️
...bird_cli/lib/src/commands/patch/macos_patcher.dart	0.00%	12 Missing ⚠️
...horebird_cli/lib/src/code_push_client_wrapper.dart	11.11%	8 Missing ⚠️
...bird_cli/lib/src/commands/patch/patch_command.dart	16.66%	5 Missing ⚠️
..._cli/lib/src/commands/release/release_command.dart	20.00%	4 Missing ⚠️

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