[Enhancement] Add support for Bluetooth Classic

[DamianSuess]

As per discussion post #13, add the ability to interface with Bluetooth Classic.

Discussed in https://github.com/SuessLabs/Linux.Bluetooth/discussions/13

^{Originally posted by embeddedmz July 21, 2023} Can I use this library to communicate with a standard (non-LE) bluetooth device ? At the moment I'm using a C++/Qt program to communicate via bluetooth and I'd like to do the communication in the C# program to reduce complexity and bugs.