[feature] add reverse audio path support

[Spartan-II-117]

Feature Description

Support the new reverse audio path in the latest SendSpin version

Use Case

Adding an external device (Radio Tuner, turntable, ETC)

Installation Method

Home Assistant Add-on

Alternatives Considered (optional)

No response

[chrisuthe]

The .net SDK Already supports this and this Add on will 100% support it as well 👍