Automatically do action upon respawn

## Describe your suggestion
Hey, so when you die, there are sometimes several things a server may do or several things you may want to do. You may want to go to one of your homes, or maybe you need to run some command like /kit, or something along those lines. I thought it would be great if a feature was added where upon automatic respawn (with the option enabled), you can automatically send commands or messages in chat. This would be great at automating certain tasks, and I think it would be a great addition.

## Settings
If applicable, what settings/customizability should be offered to tweak the functionality of your suggestion.

- Allow players to customize what commands / messages they want to send
- Allow players to turn on / off either specific or all automatic commands and messages at will
- Enable / disable sending these messages upon joining a server
## Context

Baritone saves players both time and stress by helping them to automate certain tasks. By allowing players to further automate certain tasks, it can save them quite a bit of time. I know an addition like this would be very useful to players, and I think it would go perfectly with Baritone.

## Final checklist
- [✓] I have not used any OwO's or UwU's in this issue.

The issue names no files, tests, or entry points. Begin by locating the existing respawn, chat-message, and settings paths, then define how configurable commands, per-command toggles, and join-server behavior should interact; done means the requested options work together and are covered by appropriate tests.

Written by the indexing model from the issue text.