feat: iOS from Objective-C to Swift

[AyadLaouissi]

Description

In this PR we have changed the iOS generated code from Objective-C to Swift.

https://github.com/VeryGoodOpenSource/very_good_cli/issues/370

https://github.com/VeryGoodOpenSource/very_good_flutter_plugin/issues/43

Type of Change

• [x] ✨ 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

[renancaraujo]

Should we do this to macOS too?

[AyadLaouissi]

Should we do this to macOS too?

macOS is using Swift in the current code