[Feature Request] Randomizer

As the title states, a randomizer would be fantastic for this, especially if you can also build in AP support for multiworlds.

There is a standalone rando currently and I would love to see something like it here, especially since the development has become stagnant for the standalone.

Shuffle planet order, random item per world cause you to blow up, ability to have the same planet multiple times in a run, etc etc.

No files, tests, or entry points are identified. Start by reviewing the existing standalone randomizer and how this project handles multiworld support, then define the scope for planet-order shuffling, repeated planets, random items, and AP integration. Done means the agreed randomizer behaviors are implemented and verified.

Written by the indexing model from the issue text.