feat: Add backend changes for whatsapp csat template (#12984)

This PR add the backend changes for the feature [sending CSAT surveys
via WhatsApp message templates
](https://github.com/chatwoot/chatwoot/pull/12787)

---------

Co-authored-by: Vinay Keerthi <11478411+stonecharioteer@users.noreply.github.com>

app/services/whatsapp/providers/whatsapp_cloud_service.rb

@@ -62,12 +62,31 @@ class Whatsapp::Providers::WhatsappCloudService < Whatsapp::Providers::BaseServi
     { 'Authorization' => "Bearer #{whatsapp_channel.provider_config['api_key']}", 'Content-Type' => 'application/json' }
   end
 
+  def create_csat_template(template_config)
+    csat_template_service.create_template(template_config)
+  end
+
+  def delete_csat_template(template_name = nil)
+    template_name ||= Whatsapp::CsatTemplateNameService.csat_template_name(whatsapp_channel.inbox.id)
+    csat_template_service.delete_template(template_name)
+  end
+
+  def get_template_status(template_name)
+    csat_template_service.get_template_status(template_name)
+  end
+
   def media_url(media_id, phone_number_id = nil)
     url = "#{api_base_path}/v13.0/#{media_id}"
     url += "?phone_number_id=#{phone_number_id}" if phone_number_id
     url
   end
 
+  private
+
+  def csat_template_service
+    @csat_template_service ||= Whatsapp::CsatTemplateService.new(whatsapp_channel)
+  end
+
   def api_base_path
     ENV.fetch('WHATSAPP_CLOUD_BASE_URL', 'https://graph.facebook.com')
   end