nicolium: add a way to use the new timeline

Signed-off-by: nicole mikołajczyk <git@mkljczk.pl>

packages/nicolium/src/features/preferences/index.tsx

@@ -902,6 +902,29 @@ const Preferences = () => {
           </ListItem>
         </List>
       )}
+
+      <List>
+        <ListItem
+          label={
+            <FormattedMessage
+              id='preferences.fields.experimental_timeline_label'
+              defaultMessage='Enable experimental timeline'
+            />
+          }
+          hint={
+            <FormattedMessage
+              id='preferences.fields.experimental_timeline_hint'
+              defaultMessage='It replaces the stable timeline experience and might not offer all features.'
+            />
+          }
+        >
+          <SettingToggle
+            settings={settings}
+            settingPath={['experimentalTimeline']}
+            onChange={onToggleChange}
+          />
+        </ListItem>
+      </List>
     </Form>
   );
 };