[flutter_blue] Add support for bluetooth communication

[jtmuller5]

There is an existing 3rd party plugin called flutter_blue that lets you communicate through bluetooth on Android and iOS. I think adding Tizen support to this plugin would make Tizen wearable apps significantly more valuable.

On a related note, is there any way to communicate between a wearable device and a mobile phone using Flutter for Tizen? I'd like to be able to communicate in real time across the devices (for example, tapping a button on the watch to play or pause a video on the phone.

Thanks for the Flutter support!