Added info/warning toast to storage OAuth application creation

config/locales/en.yml

@@ -2450,6 +2450,7 @@ en:
     storage:
       not_available: "Disk storage consumption is not available for this repository."
       update_timeout: "Keep the last required disk space information for a repository for N minutes.\nAs counting the required disk space of a repository may be costly, increase this value to reduce performance impact."
+      oauth_application_details: "Please copy this values into the Nextcloud OpenProject Integration settings. The client secret value will not be accessible again after you close this window."
     subversion:
       existing_title: "Existing Subversion repository"
       existing_introduction: "If you have an existing Subversion repository, you can link it with OpenProject to access it from within the application."

modules/storages/app/views/storages/admin/storages/show_oauth_application.html.erb

@@ -3,6 +3,15 @@
 <% local_assigns[:additional_breadcrumb] = "#{t("storages.provider_types.#{@object.provider_type}")} #{t("storages.label_oauth_application_details")}" %>
 <%= toolbar title: "#{t("storages.provider_types.#{@object.provider_type}")} #{t("storages.label_oauth_application_details")}" %>
 
+<div class="op-toast -warning">
+  <a title="{{ ::I18n.t('js.close_popup_title') }}"
+     class="op-toast--close icon-context icon-close">
+  </a>
+  <div class="op-toast--content">
+    <p><%= t('repositories.storage.oauth_application_details') %></p>
+  </div>
+</div>
+
 <%= labelled_tabular_form_for @oauth_application, url: '/' do |f| -%>
   <div class="form--field">
     <%= f.text_field :uid,