feat: Add CSAT Message Template Hooks (#2494)

app/services/message_templates/template/csat_survey.rb

@@ -0,0 +1,24 @@
+class MessageTemplates::Template::CsatSurvey
+  pattr_initialize [:conversation!]
+
+  def perform
+    ActiveRecord::Base.transaction do
+      conversation.messages.create!(csat_survey_message_params)
+    end
+  end
+
+  private
+
+  delegate :contact, :account, to: :conversation
+  delegate :inbox, to: :message
+
+  def csat_survey_message_params
+    {
+      account_id: @conversation.account_id,
+      inbox_id: @conversation.inbox_id,
+      message_type: :template,
+      content_type: :input_csat,
+      content: I18n.t('conversations.templates.csat_input_message_body')
+    }
+  end
+end