Ability to save/load modified settings

## Describe your suggestion
ability to have preset modifications that you can switch between instantaneously.

## Settings
override presets, override unedited settings

## Context
Between clearing areas, building schematics, and auto running to different locations there are several different settings you may want to change. Instead of needing to change several settings everytime, could there be a way to save presets?
A simple example is, when I'm building a schematic I want my buildbylayers to work from bottom to top, and when I'm clearing an area I usually want the opposite. There are other settings too that I change between the two. Instead of needing to change each setting everytime, it would be nice to do something like ".b mode building" that changes 6 different settings automatically, then after I could switch to ".b mode terraforming" to flatten some mountains by having those 6 settings be set different to work better in the other context.

## 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.

No files, tests, or entry points are named. Start by tracing how settings are changed and how commands such as `.b mode building` would be handled; done would mean agreeing on and implementing a way to save, load, and switch named groups of settings.

Written by the indexing model from the issue text.