Bundle audio-info.exe with the zip

Author: loki

appveyor.yml

@@ -33,4 +33,5 @@ after_build:
   - cmd: 7z a Sunshine-Windows.zip ..\assets\
   - cmd: 7z a Sunshine-Windows.zip sunshine.exe
   - cmd: 7z a Sunshine-Windows.zip tools\dxgi-info.exe
+  - cmd: 7z a Sunshine-Windows.zip tools\audio-info.exe
   - cmd: appveyor PushArtifact Sunshine-Windows.zip