ui: add store disk write bytes to storage dashboard

This patch adds a metric for store disk write bytes in
the Storage dashboard.

Epic: none

Release note: None

Author: annrpom

pkg/ui/workspaces/db-console/src/views/cluster/containers/nodeGraphs/dashboards/storage.tsx

@@ -466,5 +466,30 @@ export default function (props: GraphDashboardProps) {
         )}
       </Axis>
     </LineGraph>,
+
+    <LineGraph
+      title="Store Disk Write Bytes/s"
+      sources={storeSources}
+      isKvGraph={true}
+      tenantSource={tenantSource}
+      tooltip={
+        <div>
+          The number of bytes written to the store's disk per second{" "}
+          {tooltipSelection} (as reported by the OS).
+        </div>
+      }
+      showMetricsInTooltip={true}
+    >
+      <Axis units={AxisUnits.Bytes} label="bytes">
+        {storeMetrics(
+          {
+            name: "cr.store.storage.disk.write.bytes",
+            nonNegativeRate: true,
+          },
+          nodeIDs,
+          storeIDsByNodeID,
+        )}
+      </Axis>
+    </LineGraph>,
   ];
 }