Add pausing and resuming in between game sessions

Hello! I apologize if this was already suggested, but maybe a good feature (If this is possible) would be to be able to pause and save in one session and resume when logging back in at a later time. This would prove beneficial to players who are focusing on large projects that take multiple days to complete and aren't able to keep a running PC overnight due to financial or hardware issues.
## Settings
I believe that there should be (again, if this is possible), a MANUAL save option/button where before you plan on leaving the server or moving on to some other task, you can manually save and cross-session pause your current build. When you relog or want to continue, you'd be able to press the same button to continue the last process. Honestly, I don't know anything about coding and I have no idea if this is even _possible_ so I apologize if this is a waste of time!
## Context
This would improve Baritone greatly by allowing players to improve the scale of and increase the creativity of the builds and tasks Baritone is used to perform by allowing projects to have a wider time frame.

## Final checklist
- [x] I know how to properly use check boxes
- [ x] I have not used any OwO's or UwU's in this issue.