Add Go API examples for adding punctuations to text. (#1478)

go-api-examples/add-punctuation/go.mod

@@ -0,0 +1,3 @@
+module add-punctuation
+
+go 1.12

go-api-examples/add-punctuation/main.go

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+package main
+
+import (
+	sherpa "github.com/k2-fsa/sherpa-onnx-go/sherpa_onnx"
+	"log"
+)
+
+func main() {
+	log.SetFlags(log.LstdFlags | log.Lmicroseconds)
+
+	config := sherpa.OfflinePunctuationConfig{}
+	config.Model.CtTransformer = "./sherpa-onnx-punct-ct-transformer-zh-en-vocab272727-2024-04-12/model.onnx"
+	config.Model.NumThreads = 1
+	config.Model.Provider = "cpu"
+
+	punct := sherpa.NewOfflinePunctuation(&config)
+	defer sherpa.DeleteOfflinePunc(punct)
+
+	textArray := []string{
+		"这是一个测试你好吗How are you我很好thank you are you ok谢谢你",
+		"我们都是木头人不会说话不会动",
+		"The African blogosphere is rapidly expanding bringing more voices online in the form of commentaries opinions analyses rants and poetry",
+	}
+	log.Println("----------")
+	for _, text := range textArray {
+		newText := punct.AddPunct(text)
+		log.Printf("Input text: %v", text)
+		log.Printf("Output text: %v", newText)
+		log.Println("----------")
+	}
+}

go-api-examples/add-punctuation/run.sh

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+#!/usr/bin/env bash
+
+set -ex
+
+if [ ! -d ./sherpa-onnx-punct-ct-transformer-zh-en-vocab272727-2024-04-12 ]; then
+  curl -SL -O https://github.com/k2-fsa/sherpa-onnx/releases/download/punctuation-models/sherpa-onnx-punct-ct-transformer-zh-en-vocab272727-2024-04-12.tar.bz2
+  tar xvf sherpa-onnx-punct-ct-transformer-zh-en-vocab272727-2024-04-12.tar.bz2
+  rm sherpa-onnx-punct-ct-transformer-zh-en-vocab272727-2024-04-12.tar.bz2
+fi
+
+go mod tidy
+go build
+
+./add-punctuation