[gnome-boxes] welcome-tutorial: Re-add the carousel indicator

[Felipe Borges <felipeborges src gnome org>]

commit f9005ba336c841d417e7b434fd4d3972f65b58c5
Author: Adrien Plazas <kekun plazas lapsote net>
Date:   Fri Sep 25 12:35:44 2020 +0200

    welcome-tutorial: Re-add the carousel indicator
    
    It was accidentally dropped when porting to libhandy 1.

 data/ui/welcome-tutorial.ui | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)
---
diff --git a/data/ui/welcome-tutorial.ui b/data/ui/welcome-tutorial.ui
index d8ef1e71..3164debb 100644
--- a/data/ui/welcome-tutorial.ui
+++ b/data/ui/welcome-tutorial.ui
@@ -17,6 +17,12 @@
         <property name="visible">True</property>
         <property name="border-width">0</property>
 
+        <child>
+          <object class="GtkBox" id="indicator-spacer">
+            <property name="visible">True</property>
+          </object>
+        </child>
+
         <child>
           <object class="GtkOverlay">
             <property name="visible">True</property>
@@ -127,7 +133,23 @@
             </child>
           </object>
         </child>
+
+        <child>
+          <object class="HdyCarouselIndicatorDots" id="indicator">
+            <property name="visible">True</property>
+            <property name="carousel">paginator</property>
+            <property name="margin-top">6</property>
+            <property name="margin-bottom">6</property>
+          </object>
+        </child>
       </object>
     </child>
   </template>
+  <object class="GtkSizeGroup">
+    <property name="mode">vertical</property>
+    <widgets>
+      <widget name="indicator-spacer"/>
+      <widget name="indicator"/>
+    </widgets>
+  </object>
 </interface>