feat(neuron-ui): add a tooltip to display synchronized block number and the tip block number

Author: Keith-CY

packages/neuron-ui/src/containers/Footer/index.tsx

@@ -34,7 +34,7 @@ export const SyncStatus = ({
   const percentage = +syncedBlockNumber / +tipBlockNumber
 
   return (
-    <div style={{ display: 'flex', alignItems: 'center' }}>
+    <div style={{ display: 'flex', alignItems: 'center' }} title={`${syncedBlockNumber}/${tipBlockNumber}`}>
       {+syncedBlockNumber + bufferBlockNumber < +tipBlockNumber ? (
         <>
           {t('sync.syncing')}