public static Map<String, String> parseLabels(String labels) {
        return parseLabels(labels, new LinkedHashMap<>());
    }
Parse the labels to label map

@param labels The labels format by 'key1=value1&key2=value2...'
@return The label map of labels
inlong-sort/sort-flink/base/src/main/java/org/apache/inlong/sort/base/util/LabelUtils.java