Feat goctl bug (#1332)

* Support goctl bug

* fix typo

* format code

Co-authored-by: anqiansong <anqiansong@bytedance.com>

tools/goctl/bug/env.go

@@ -0,0 +1,32 @@
+package bug
+
+import (
+	"bytes"
+	"fmt"
+	"runtime"
+
+	"github.com/tal-tech/go-zero/tools/goctl/internal/version"
+)
+
+type env map[string]string
+
+func (e env) string() string {
+	if e == nil {
+		return ""
+	}
+
+	w := bytes.NewBuffer(nil)
+	for k, v := range e {
+		w.WriteString(fmt.Sprintf("%s = %q\n", k, v))
+	}
+
+	return w.String()
+}
+
+func getEnv() env {
+	e := make(env)
+	e[os] = runtime.GOOS
+	e[arch] = runtime.GOARCH
+	e[goctlVersion] = version.BuildVersion
+	return e
+}