feat: Add Cron Jobs In Chatwoot and update installation notice (#1630)

spec/lib/chatwoot_hub_spec.rb

@@ -0,0 +1,15 @@
+require 'rails_helper'
+
+describe ChatwootHub do
+  it 'get latest version from chatwoot hub' do
+    version = '1.1.1'
+    allow(RestClient).to receive(:get).and_return({ 'version': version }.to_json)
+    expect(described_class.latest_version).to eq version
+    expect(RestClient).to have_received(:get).with(described_class::BASE_URL, { params: described_class.instance_config })
+  end
+
+  it 'returns nil when chatwoot hub is down' do
+    allow(RestClient).to receive(:get).and_raise(ExceptionList::REST_CLIENT_EXCEPTIONS.sample)
+    expect(described_class.latest_version).to eq nil
+  end
+end