Add Among Us 2026.9.29 compatibility

[MitchellTN]

Updates LevelImposter for Among Us 2026.9.29.

Changes:

• Updates the AmongUs.GameLibs.Steam target from 2026.8.18 to 2026.9.29.
• Replaces stale MapLoader.CurrentMap references with GameConfiguration.CurrentMap.
• Adds the namespaces required by DummyPatch.
• Replaces removed LIShipStatus.DummyIndex usage with ordered matching between util-dummy elements and freeplay dummy players.

Testing:

• Builds successfully against AmongUs.GameLibs.Steam 2026.9.29.
• Tested on the x64 Among Us build.
• LevelImposter loads successfully.
• Custom map functionality is working in runtime testing.

[DigiWorm0]

Hi MitchellTN, thank you so much for your contribution! I have confirmed the changes work on the a BepInEx x64 bleeding edge build w/ Among Us v19s (which is kinda surprising giving the pointer shenanigans we sometimes do). Your changes will be available in the next public LI release in the next week or so.

[MitchellTN]

Awesome, I'm glad I could help. I have been vibe coding a custom editor to be compatible with your mod. I really like it but I struggled to use the editor and thought I would build something that seemed more intuitive for me. I sent you an invite to the repo if you are interested you are welcome to use any of the code in that repo. It was originally forked from your editor. Its not done yet but I think i've got it to a really good point.