Add token count to --list-chats

[Remowylliams]

Hi I've run into a few situations where I'm using chatGPT-3.5 and I'd get a failure and it appears that it's because I've exceeded the 4k context size.
When I changed to using the chatGPT-3.5-16k
The problem went away and that is how I came to believe it was just sending too much session data.

Would it be difficult to add a token count to each session in the --list-chats output and does it make sense to do so?

If I'm wrong about the reason I can try to provide more debug info.
I'm using this on a 22.04 Linux system.

Thanks for making this tool. It's been great when I need a quick lookup with some intelligence behind it.