feat: add audit trail for sign_in and sign_out (#7158)

* feat: add audit_trail for sign_in event

* chore: ignore unrelated User model columns for auditing

* chore: fix prepend call for webhook/automation rule

* chore: add spec for sign_in event

* chore: refactor sign_in auditlog method to enterprise namespace

* feat: add sign_out audit trail

* feat: review comments

enterprise/app/models/enterprise/audit/user.rb

@@ -0,0 +1,13 @@
+module Enterprise::Audit::User
+  extend ActiveSupport::Concern
+
+  included do
+    audited only: [
+      :availability,
+      :display_name,
+      :email,
+      :name
+    ]
+    audited associated_with: :account
+  end
+end