feat: add support for controlling scrolling of inner virtual list

src/main/java/com/flowingcode/vaadin/addons/chatassistant/ChatAssistant.java

@@ -272,5 +272,32 @@ public Component getFooterComponent() {
     return footerComponent;
   }
 
+  /**
+   * Scrolls to the given row index. Scrolls so that the element is shown at
+   * the start of the visible area whenever possible.
+   * <p>
+   * If the index parameter exceeds current item set size the grid will scroll
+   * to the end.
+   *
+   * @param rowIndex
+   *            zero based index of the item to scroll to in the current view.
+   */
+  public void scrollToIndex(int position) {
+    this.content.scrollToIndex(position);
+  }
+
+  /**
+   * Scrolls to the first element.
+   */
+  public void scrollToStart() {
+    this.content.scrollToStart();
+  }
+
+  /**
+   * Scrolls to the last element of the list.
+   */
+  public void scrollToEnd() {
+    this.content.scrollToEnd();
+  }
 
 }