perf: 边缘监控，图表新加鼠标移入显示数值

@@ -182,6 +182,12 @@
             fontSize: 12,
           },
         },
+        tooltip: {
+          trigger: 'axis',
+          axisPointer: {
+            type: 'cross',
+          },
+        },
         xAxis: {
           type: 'category',
           data: xAxisData,