disconnectOnFailure

## Describe your suggestion
add an option to disconnect on failing current task, such as farming with no crops remaining or mining with a full inventory.

## Context
users can set baritone to complete a task and walk away without being left idling somewhere once it's finished. similar to disconnectOnArrival but doesn't activate at every vein when mining.
could be limited to specific cases where failure means the task is effectively complete, rename to disconnectOnCompletion? alternatively, simply adjust disconnectOnArrival to be useful for mining.

## 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.