Add basic view

app/views/settings/_nav_sidebar.html.erb

@@ -3,4 +3,9 @@
               edit_user_registration_path,
               class: 'list-group-item list-group-item-action ' \
                      "#{:active if tab == :credentials}" %>
+
+  <%= link_to translate(:telegram_contacts, scope: %i[nav_tabs settings]),
+              settings_telegram_contacts_path,
+              class: 'list-group-item list-group-item-action '\
+                     "#{:active if tab == :telegram_contacts}" %>
 </div>

app/views/settings/telegram_contacts/index.html.erb

@@ -0,0 +1,10 @@
+<div class="container">
+  <div class="row">
+    <div class="col-md-3 mb-4">
+      <%= render partial: 'settings/nav_sidebar', locals: { tab: :telegram_contacts } %>
+    </div>
+
+    <div class="col-md-9">
+    </div>
+  </div>
+</div>

config/locales/nav_tabs/en.yml

@@ -5,3 +5,4 @@ en:
       confirmations: Confirmations
     settings:
       credentials: Credentials
+      telegram_contacts: Telegram contacts

config/locales/nav_tabs/ru.yml

@@ -5,3 +5,4 @@ ru:
       confirmations: Подтверждения
     settings:
       credentials: Данные для входа
+      telegram_contacts: Контакты Telegram