Refactor Autotile serialization so we can support stuff like merging
Fix erasing Autotile updates
Save merge state to Autotiles, and fix SetAutotile override not working as intended
Finally got merged autotile working, visual still displays incorrectly at times however
https://files.facepunch.com/CarsonKompon/2024/December/04_12-02-FearlessAruanas.mp4