DataSourceApi: add getCollapsedText(query) to DataSourceApi (#16482)

Add getQueryDisplayText() to DataSourceApi

packages/grafana-ui/src/types/datasource.ts

@@ -106,6 +106,11 @@ export interface DataSourceApi<TQuery extends DataQuery = DataQuery> {
    */
   getQueryHints?(query: TQuery, results: any[], ...rest: any): QueryHint[];
 
+  /**
+   * Convert a query to a simple text string
+   */
+  getQueryDisplayText?(query: TQuery): string;
+
   /**
    *  Set after constructor is called by Grafana
    */