feat: Audit Logs for Account User Changes (#7405)

- Audit log for user invitations: https://linear.app/chatwoot/issue/CW-1768/invited-a-user-to-the-account
- Audit log for change role: https://linear.app/chatwoot/issue/CW-1767/name-or-email-changed-the-role-of-the-user-email-to-agent-or-admin
- Audit log for status change: https://linear.app/chatwoot/issue/CW-1766/availability-status-as-events-for-audit-logs


Co-authored-by: Shivam Mishra <scm.mymail@gmail.com>

enterprise/app/models/enterprise/audit/account_user.rb

@@ -0,0 +1,13 @@
+module Enterprise::Audit::AccountUser
+  extend ActiveSupport::Concern
+
+  included do
+    audited only: [
+      :availability,
+      :role,
+      :account_id,
+      :inviter_id,
+      :user_id
+    ], on: [:create, :update], associated_with: :account
+  end
+end

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

@@ -2,12 +2,13 @@ module Enterprise::Audit::User
   extend ActiveSupport::Concern
 
   included do
+    # required only for sign_in and sign_out events, which we are logging manually
+    # hence the proc that always returns false
     audited only: [
       :availability,
       :display_name,
       :email,
       :name
-    ]
-    audited associated_with: :account
+    ], unless: proc { |_u| true }
   end
 end