feat: add audit trail for channel updates (#7396)

app/models/concerns/channelable.rb

@@ -4,9 +4,14 @@ module Channelable
     validates :account_id, presence: true
     belongs_to :account
     has_one :inbox, as: :channel, dependent: :destroy_async, touch: true
+    after_update :create_audit_log_entry
   end
 
   def messaging_window_enabled?
     false
   end
+
+  def create_audit_log_entry; end
 end
+
+Channelable.prepend_mod_with('Channelable')