controller: Enable to toggle search bar by shortcut

With Ctrl+S, not only just show it but also can toggle.
5 jobs for toggle-searchbar in 55 minutes and 28 seconds (queued for 1 second)
Status Job ID Name Coverage
  Build
passed #255096
fedora

00:13:16

passed #255097
ubuntu

00:21:02

 
  Test
passed #255098
flatpak

00:34:00

 
  Deploy
passed #255099
review

00:00:25

manual #255100
allowed to fail manual
stop_review