add a button

src/server/service/bolt.js

@@ -219,6 +219,14 @@ class BoltService {
           {
             type: 'actions',
             elements: [
+              {
+                type: 'button',
+                text: {
+                  type: 'plain_text',
+                  text: 'Next',
+                },
+                action_id: 'showNextResults',
+              },
               {
                 type: 'button',
                 text: {