add label config

Co-authored-by: pranavm2109 <mishrap@dickinson.edu>

packages/mermaid/src/config.type.ts

@@ -935,6 +935,10 @@ export interface XYChartConfig extends BaseDiagramConfig {
    * Top and bottom space from the chart title
    */
   titlePadding?: number;
+  /**
+   * Should show the data label on the chart
+   */
+  showDataLabel?: boolean;
   /**
    * Should show the chart title
    */

packages/mermaid/src/schemas/config.schema.yaml

@@ -1228,6 +1228,10 @@ $defs: # JSON Schema definition (maybe we should move these to a separate file)
         type: number
         default: 10
         minimum: 0
+      showDataLabel:
+        description: Should show the data label on the chart
+        type: boolean
+        default: true
       showTitle:
         description: Should show the chart title
         type: boolean