escape strings in Go generator (#381)

test/fixtures/curl_commands/get_header_with_quotes.sh

@@ -0,0 +1,4 @@
+# https://github.com/curlconverter/curlconverter/issues/272
+curl 'http://localhost:28139' \
+  -H 'sec-ch-ua: " Not A;Brand";v="99", "Chromium";v="92"' \
+  --compressed

test/fixtures/go/get_header_with_quotes.go

@@ -0,0 +1,27 @@
+package main
+
+import (
+	"fmt"
+	"io/ioutil"
+	"log"
+	"net/http"
+)
+
+func main() {
+	client := &http.Client{}
+	req, err := http.NewRequest("GET", "http://localhost:28139", nil)
+	if err != nil {
+		log.Fatal(err)
+	}
+	req.Header.Set("sec-ch-ua", `" Not A;Brand";v="99", "Chromium";v="92"`)
+	resp, err := client.Do(req)
+	if err != nil {
+		log.Fatal(err)
+	}
+	defer resp.Body.Close()
+	bodyText, err := ioutil.ReadAll(resp.Body)
+	if err != nil {
+		log.Fatal(err)
+	}
+	fmt.Printf("%s\n", bodyText)
+}