add: some user api and all api desc

common/utils/responses/responses.go

@@ -0,0 +1,23 @@
+package responses
+
+import "encoding/json"
+
+type ErrorResponse struct {
+	Code int    `json:"code"`
+	Msg  string `json:"msg"`
+}
+
+func (e *ErrorResponse) Error() string {
+	marshal, err := json.Marshal(e)
+	if err != nil {
+		return err.Error()
+	}
+	return string(marshal)
+}
+
+func NewErrorResp(code int, msg error) *ErrorResponse {
+	return &ErrorResponse{
+		Code: code,
+		Msg:  msg.Error(),
+	}
+}