Hello world test

1. getinfo: List Sound Cards
2. Get All Sound Card info
3. Get Sound Card info devid=xx
4. Get all Alsa Ctls for devid=xx
5. Get Alsa Ctls numid=1+2
6. Get Alsa Ctl numid=1


7. List UCM verbs
8. Set UCM HiFi
9. Set UCM HiFi+Headphone
10. Set UCM HiFi+Headphone+RecordMedia


11. Get UCM OutputDspName+PlaybackPCM+CapturePCM (after SET UCM)


12. Subscribe AlsaCtl Events