Mine blocks for a certain time

## Describe your suggestion
With as much detail as possible, describe what your suggestion would do for Baritone.
Basically, the team could add an argument in mine command where Fabritone or Baritone would mine certain blocks for a certain time then stop automatically. Example: mine diamond_ore.9m
## Settings
If applicable, what settings/customizability should be offered to tweak the functionality of your suggestion.
mine diamond_ore.9m to mine for 9 minutes. mine diamond_ore.9s for 9 seconds. mine diamond_ore.9h for 9 hours
## Context
Describe how your suggestion would improve Baritone, or the reason behind it being added.
This can be useful because it would allow users to mine blocks for a certain amount of time and stop after that.
## 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.