feat(chart-area): add series statistics display and computation for chart data

ts_web/elements/00group-chart/dees-chart-area/styles.ts

@@ -34,9 +34,46 @@ export const chartAreaStyles = [
         position: absolute;
         top: 44px;
         left: 0;
-        bottom: 0;
+        bottom: 32px;
         right: 0;
       }
+      .statsBar {
+        position: absolute;
+        bottom: 0;
+        left: 0;
+        right: 0;
+        height: 32px;
+        display: flex;
+        align-items: center;
+        gap: 24px;
+        padding: 0 16px;
+        border-top: 1px solid ${cssManager.bdTheme('hsl(0 0% 89.8%)', 'hsl(0 0% 14.9%)')};
+        font-size: 11px;
+        color: ${cssManager.bdTheme('hsl(0 0% 45%)', 'hsl(0 0% 55%)')};
+      }
+      .statsSeries {
+        display: flex;
+        align-items: center;
+        gap: 8px;
+      }
+      .statsSeries + .statsSeries {
+        padding-left: 24px;
+        border-left: 1px solid ${cssManager.bdTheme('hsl(0 0% 89.8%)', 'hsl(0 0% 14.9%)')};
+      }
+      .statsColor {
+        width: 8px;
+        height: 8px;
+        border-radius: 2px;
+        flex-shrink: 0;
+      }
+      .statsName {
+        font-weight: 500;
+        color: ${cssManager.bdTheme('hsl(0 0% 20%)', 'hsl(0 0% 80%)')};
+        margin-right: 4px;
+      }
+      .statsItem strong {
+        color: ${cssManager.bdTheme('hsl(0 0% 15%)', 'hsl(0 0% 90%)')};
+      }
       .lw-tooltip {
         position: absolute;
         z-index: 100;