Add option to reset/delete the world on startup

### Enhancement Type

A completely new feature

### Describe the enhancement

Add a new option that when set to true will delete the world folder on startup. Useful for minigame servers using mods such as bingo or lockout where a fresh world with a new random seed is needed for each game as a quick container restart will do all of the work.

Another option could be to allow the world option to take an empty folder and that in combination with the force copy option could be used to the same effect.

Start by locating the startup option handling and the logic that creates or copies the Minecraft world. Compare the requested delete-on-start behavior with the alternative empty-folder and force-copy approach, then define the option semantics and verify them with the repository's available startup checks.

Written by the indexing model from the issue text.