Feature Request: Enhancements to reminders-cli #59

First of all, I'd like to thank you for creating such a useful command-line tool for interacting with Apple's Reminders. It has been of great help in managing my tasks efficiently. I am writing this issue to suggest a few enhancements that, I believe, would make the tool even more powerful and versatile.

Group Querying: Currently, the tool allows us to work with lists. It would be really helpful if it could also support querying and managing groups of lists.

Additional Fields: I'd like to suggest adding support for querying and managing additional fields of reminders such as notes, URL, date, time, labels, location, and subtasks. This would provide a more holistic view of the reminders and allow more comprehensive management.

Export Attachments: It would be really helpful if reminders-cli could support exporting attachments like images from reminders. This would enable a more complete backup of reminders data.

I understand that these suggestions might require considerable effort to implement, but I believe they would significantly enhance the functionality and usefulness of reminders-cli. I look forward to hearing your thoughts on these suggestions.