feat(toolbar-search): support auto-filterable rows (#1179)

Closes #591

types/DataTable/ToolbarSearch.svelte.d.ts

@@ -27,6 +27,23 @@ export interface ToolbarSearchProps
    */
   disabled?: boolean;
 
+  /**
+   * Set to `true` to filter table rows using the search value.
+   *
+   * If `true`, the default search excludes `id`, `cells` fields and
+   * only does a basic comparison on string and number type cell values.
+   *
+   * To implement your own client-side filtering, pass a function
+   * that accepts a row and value and returns a boolean.
+   * @default false
+   */
+  shouldFilterRows?:
+    | boolean
+    | ((
+        rows: import("./DataTable.svelte").DataTableRow,
+        value: number | string
+      ) => boolean);
+
   /**
    * Specify the tabindex
    * @default "0"