feat(Administrateur::ArchivesControllers): add archives #index and #create for admin

app/views/administrateurs/procedures/show.html.haml

@@ -4,6 +4,11 @@
             metadatas: ["Créée le #{@procedure.created_at.strftime('%d/%m/%Y')} - n° #{@procedure.id}", "#{@procedure.close? ? "Close le #{@procedure.closed_at.strftime('%d/%m/%Y')}" : @procedure.locked? ? "Publiée - #{procedure_lien(@procedure)}" : "Brouillon"}"] }
 
 .container.procedure-admin-container
+  - if !@procedure.brouillon?
+    = link_to admin_procedure_archives_path(@procedure), class: 'button', id: "archive-procedure" do
+      %span.icon.download
+      Télécharger
+
   = link_to @procedure.active_revision.draft? ? commencer_dossier_vide_test_path(path: @procedure.path) : commencer_dossier_vide_path(path: @procedure.path), target: "_blank", rel: "noopener", class: 'button', id: "pdf-procedure" do
     %span.icon.printer
     PDF