- create MessageSummary struct to hold message id and subject
- update MessageList to use MessageSummary instead of just message ids
- implement log_message_subjects to fetch and log message subjects
- add elide function to truncate long subjects for better logging
- implement Debug trait for MessageList struct for better debugging
- add getter methods for message_ids, label_ids, and hub for external access
- change log level check to include Info and higher for message subject logging
- add message_ids field to store message IDs
- update run method to populate message_ids
- create messages_list method for API calls
- create log_message_subjects method to log message subjects
