### Description

We now support storing KNN vectors as part of our indexed data.  These vectors should be included in the disk usage API.
server/src/main/java/org/elasticsearch/action/admin/indices/diskusage/IndexDiskUsageStats.java
out.writeVLong(normsBytes);
            out.writeVLong(termVectorsBytes);
        }
        private void add(PerFieldDiskUsage other) {
            invertedIndexBytes += other.invertedIndexBytes;
            storedFieldBytes += other.storedFieldBytes;
            docValuesBytes += other.docValuesBytes;
            pointsBytes += other.pointsBytes;
            normsBytes += other.normsBytes;
            termVectorsBytes += other.termVectorsBytes;
        }
        public long getInvertedIndexBytes() {
            return invertedIndexBytes;
        }
        public long getStoredFieldBytes() {
            return storedFieldBytes;
        }
        public long getDocValuesBytes() {
            return docValuesBytes;
        }
        public long getPointsBytes() {
            return pointsBytes;
        }
        public long getNormsBytes() {
            return normsBytes;
        }
        public long getTermVectorsBytes() {
            return termVectorsBytes;
        }
        long totalBytes() {