Add "OAuth Applications" to admin panel options

Add navigation link for Doorkeeper OAuth Applications management access in the admin dropdown menu.
- Link only renders for super admins.

Author: aaronskiba

app/views/layouts/_branding.html.erb

@@ -114,6 +114,9 @@
                 </li>
               <% end %>
               <% if current_user.can_super_admin? %>
+                <li class="nav-item <%= 'class=active' if active_page?(oauth_applications_path) %>">
+                  <%= link_to _('OAuth Applications'), oauth_applications_path, class: 'nav-link dropdown-item  px-3' %>
+                </li>
                 <li class="nav-item <%= 'class=active' if active_page?(super_admin_api_clients_path) %>">
                   <%= link_to _('Api Clients'), super_admin_api_clients_path, class: 'nav-link dropdown-item  px-3' %>
                 </li>