Add Kvaser Leaf support on macOS

[adolfogc]

Is your feature request related to a problem? Please describe.

Add Kvaser Leaf support on macOS by using the MacCAN-KvaserCAN implementation (https://github.com/mac-can/MacCAN-KvaserCAN).

Describe the solution you'd like

Add a new interface module to support using Kvaser Leaf on macOS.

Describe alternatives you've considered

None.

Additional context

Supporting this interface on macOS may require shipping a C++ extension.