Add a button to open search ?

[cderv]

With new reveal 4, Search needs to be triggered with CTRL + SHIFT + F.

We could add a new custom controls to open search too.

Could be this way :

output: 
  revealjs::revealjs_presentation:
    self_contained: false
    reveal_plugins: 
      - search
    reveal_options:
      search:
        toggleSearchButton: true

But it is not really a reveal option documented in reveal 🤔
Maybe we should add an argument about controls