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

spec/controllers/super_admin/instance_statuses_controller_spec.rb

@@ -0,0 +1,25 @@
+require 'rails_helper'
+
+RSpec.describe 'Super Admin Instance health', type: :request do
+  let(:super_admin) { create(:super_admin) }
+
+  describe 'GET /super_admin/instance_status' do
+    context 'when it is an unauthenticated super admin' do
+      it 'returns unauthorized' do
+        get '/super_admin/instance_status'
+        expect(response).to have_http_status(:redirect)
+      end
+    end
+
+    context 'when it is an authenticated super admin' do
+      it 'shows the instance_status page' do
+        sign_in(super_admin, scope: :super_admin)
+        get '/super_admin/instance_status'
+        expect(response).to have_http_status(:success)
+        expect(response.body).to include('Chatwoot version')
+        sha = `git rev-parse HEAD`
+        expect(response.body).to include(sha)
+      end
+    end
+  end
+end