feat: Ability to improve drafts in the editor using GPT integration (#6957)

ref: https://github.com/chatwoot/chatwoot/issues/6436
fixes: https://linear.app/chatwoot/issue/CW-1552/ability-to-rephrase-text-in-the-editor-using-gpt-integration

---------

Co-authored-by: Sojan <sojan@pepalo.com>
Co-authored-by: Nithin David Thomas <1277421+nithindavid@users.noreply.github.com>

app/models/integrations/hook.rb

@@ -25,6 +25,8 @@ class Integrations::Hook < ApplicationRecord
   validate :validate_settings_json_schema
   validates :app_id, uniqueness: { scope: [:account_id], unless: -> { app.present? && app.params[:allow_multiple_hooks].present? } }
 
+  # TODO: This seems to be only used for slack at the moment
+  # We can add a validator when storing the integration settings and toggle this in future
   enum status: { disabled: 0, enabled: 1 }
 
   belongs_to :account
@@ -45,6 +47,15 @@ class Integrations::Hook < ApplicationRecord
     update(status: 'disabled')
   end
 
+  def process_event(event)
+    case app_id
+    when 'openai'
+      Integrations::Openai::ProcessorService.new(hook: self, event: event).perform if app_id == 'openai'
+    else
+      'No processor found'
+    end
+  end
+
   private
 
   def ensure_hook_type