Clean up: remove generated ephemeral files and duplicate Package.swift

- Removed Flutter ephemeral generated files that shouldn't be committed
- Removed duplicate Package.swift in wrong location
- Added ephemeral/ to .gitignore to prevent future commits
- Keep only the correct Package.swift in ios/permission_handler_apple/

Author: ened

.gitignore

@@ -83,6 +83,7 @@ flutter_export_environment.sh
 **/ios/Flutter/App.framework
 **/ios/Flutter/Flutter.framework
 **/ios/Flutter/Generated.xcconfig
+**/ios/Flutter/ephemeral/
 **/ios/Flutter/app.flx
 **/ios/Flutter/app.zip
 **/ios/Flutter/flutter_assets/