Merge branch 'open-show' into 'main'

Show URL in `gdk open`

See merge request https://gitlab.com/gitlab-org/gitlab-development-kit/-/merge_requests/3436



Merged-by: Nao Hashizume <nhashizume@gitlab.com>
Approved-by: Nao Hashizume <nhashizume@gitlab.com>
Approved-by: Lin Jen-Shin <jen-shin@gitlab.com>
Reviewed-by: Nao Hashizume <nhashizume@gitlab.com>
Co-authored-by: Anatoli Babenia <anatoli@rainforce.org>

lib/gdk/command/open.rb

@@ -41,6 +41,7 @@ def test_url
       end
 
       def open_exec
+        GDK::Output.puts("Opening #{config.__uri}")
         exec("#{open_command} '#{config.__uri}'")
       end