Remove portaudio-go in Go API examples. (#2317)

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.

nodejs-addon-examples/test_asr_non_streaming_whisper.js

@@ -1,6 +1,6 @@
 // Copyright (c)  2024  Xiaomi Corporation
 const sherpa_onnx = require('sherpa-onnx-node');
-console.log(`verison : ${sherpa_onnx.version}`);
+console.log(`version : ${sherpa_onnx.version}`);
 console.log(`git sha1: ${sherpa_onnx.gitSha1}`);
 console.log(`git date: ${sherpa_onnx.gitDate}`);