add a feature to Baritone that would allow users to specify a specific area for farming using the #sel feature. Currently, Baritone can wander and farm in any area, which can lead to unintended farming or damage to other builds. With this feature, users could specify the boundaries of the farm, ensuring that Baritone only farms within those boundaries.

This feature would greatly improve the functionality of Baritone. By allowing users to specify the boundaries of the farm, they can avoid unintended farming and prevent damage to other builds. This feature would be especially useful for players who have multiple farms in close proximity to each other or for those who want to ensure that Baritone does not interfere with specific structures or areas.

Duplicate of #1114