Bluetooth File Transfer (Android) v5.666

The application now meets Google guidelines for latest Android 13 (Tiramisù). Home widget has been completely reviewed, now you can resize and fast access to main settings through it. FTP/OPP services have been improved to better support background transfers without interruptions. Program permissions have been reengineered to make them easier to setup at the beginning. Moreover a lot bugs, both major and minor, have been fixed.