Suggestion: Chests vary in weight depending on the items they contain

### Checklist

- [x] I have searched [GitHub](https://github.com/YassiGame/SableBeyond/issues?q=is%3Aissue%20state%3Aopen%20label%3ASuggestion) for my suggestion

### What is your suggestion?

can you make chests change their mass depending on items inside (block mass * count + chest weight)
empty chest will weight 0.5 kpg
but chest with stack of stone will weight 128.5 kpg (2 * 64 + 0.5)