controllers: add a TypesDeChamp#estimate_fill_duration action

config/routes.rb

@@ -461,6 +461,9 @@ Rails.application.routes.draw do
       resources :experts, controller: 'experts_procedures', only: [:index, :create, :update, :destroy]
 
       resources :types_de_champ, only: [:create, :update, :destroy] do
+        collection do
+          get :estimate_fill_duration
+        end
         member do
           patch :move
         end