feat: add more disk I/O metrics (#1866)

Co-authored-by: henrygd <hank@henrygd.me>

internal/site/src/components/routes/system/use-system-data.ts

@@ -28,6 +28,8 @@ import type {
 import { $router, navigate } from "../../router"
 import { appendData, cache, getStats, getTimeData, makeContainerData, makeContainerPoint } from "./chart-data"
 
+export type SystemData = ReturnType<typeof useSystemData>
+
 export function useSystemData(id: string) {
 	const direction = useStore($direction)
 	const systems = useStore($systems)