add button in the header to star entry (#1025)

commafeed-client/src/components/RelativeDate.tsx

@@ -1,5 +1,6 @@
 import { Trans } from "@lingui/macro"
 import { Tooltip } from "@mantine/core"
+import { Constants } from "app/constants"
 import dayjs from "dayjs"
 import { useEffect, useState } from "react"
 
@@ -13,7 +14,7 @@ export function RelativeDate(props: { date: Date | number | undefined }) {
     if (!props.date) return <Trans>N/A</Trans>
     const date = dayjs(props.date)
     return (
-        <Tooltip label={date.toDate().toLocaleString()} openDelay={500}>
+        <Tooltip label={date.toDate().toLocaleString()} openDelay={Constants.tooltip.delay}>
             <span>{date.from(dayjs(now))}</span>
         </Tooltip>
     )