feat: add chatwoot instance status in superadmin (#6045)

* feat: add chatwoot instance status in superadmin

* feat: add redis metrics to instance health page

* chore: fix rubocop

* chore: rescue redis no connection

* chore: add rspec

* chore: refactor

* feat: add instance health to /api

* chore: rescue postgres

* chore: fix spec

app/views/super_admin/instance_statuses/show.html.erb

@@ -0,0 +1,23 @@
+<% content_for(:title) do %>
+  Instance Health
+<% end %>
+<header class="main-content__header" role="banner">
+  <h1 class="main-content__page-title" id="page-title">
+    <%= content_for(:title) %>
+  </h1>
+</header>
+<section class="main-content__body">
+  <table>
+  <tr>
+    <th>Metric</th>
+    <th>Value</th>
+  </tr>
+  <% @metrics.each do |key,value| %>
+   <tr>
+   <td> <%= key %> </td>
+   <td> <%= value %> </td>
+  </tr>
+  <% end %>
+</table>
+
+</section>