Replace the deprecated portaudio-go integration with malgo in the Go real-time
speech recognition example and correct version string typos in the Node.js examples.
- Fixed “verison” typo in Node.js console logs.
- Swapped out portaudio-go for malgo in the Go microphone example,
introducing initRecognizer, callback-driven streaming, and sample conversion.
- Removed portaudio-go from go.mod.
