Enhanced inventory grid and placement logic to improve item stacking, placement rules, and maintain item world size. Key changes include:
- Removed dynamic item scaling; items retain true world size.
- Updated depth lane ownership to prevent stacking conflicts and added placement validation.
- support duplicate stacking with new methods and optimized placement for cubic items.
- Adjusted rotation logic to clarify and fix footprint transformations.
- Updated grid offset and added safeguards for inventory toggling during object pickup.
Refactored the inventory management system to improve modularity, maintainability, and readability. Encapsulate placement logic.
Improved modularity by separating grid management, item data,
and placement logic into distinct components. Added XML
documentation for better code clarity. Introduced metadata
for `InventoryGrid3D` to ensure proper Unity integration.
Add inventory system with camera transitions, and grid spawning
