Add support for the `trouble` crate

[dickermoshe]

Motivations

esp-radio already implements the necessary bt-hci traits to use the trouble crate with the ESP32.
It should not be too complicated to add support for esp-idf-svc as well.
I have a fork which implements this.

• Would you like to implement this feature? y

Solution

Separate bluedroid From the Bluetooth implementation, and implement the bt-hci traits.

Alternatives

This crate ready includes code to support Bluetooth low energy. However, the trouble crate makes it significantly easier.

Additional context

N/A