[gnome-builder/wip/gtk4-port] plugins/buildui: add install menu item

[Christian Hergert <chergert src gnome org>]

commit d9fcf10b7eda66f6581881a8abb4d4444fea4f8c
Author: Christian Hergert <chergert redhat com>
Date:   Fri May 20 16:50:26 2022 -0700

    plugins/buildui: add install menu item
    
    Might as well, we ask people to use it occasionally from command bar.

 src/plugins/buildui/gtk/menus.ui | 4 ++++
 1 file changed, 4 insertions(+)
---
diff --git a/src/plugins/buildui/gtk/menus.ui b/src/plugins/buildui/gtk/menus.ui
index 615daea8b..f3d93dd33 100644
--- a/src/plugins/buildui/gtk/menus.ui
+++ b/src/plugins/buildui/gtk/menus.ui
@@ -62,6 +62,10 @@
       </item>
     </section>
     <section id="build-export">
+      <item>
+        <attribute name="label" translatable="yes">_Install</attribute>
+        <attribute name="action">build-manager.install</attribute>
+      </item>
       <item>
         <!-- TODO: Instead of having a generic Export via the build-manager,
           this should move into the Flatpak plugin and have it use