NBT schematic loading doesn't spawn entities

**Bug Description**
When loading .nbt schematic files, LimboAuth only loads blocks and tile entities but ignores regular entities like armor stands, items, paintings etc.

**Expected Behavior**
All entities present in the NBT file should be spawned in the limbo world.

**Reproduction Steps**
1. Create a schematic with entities using structure blocks
2. Set the schematic file in LimboAuth config
3. Join the limbo - entities are missing

**NBT Structure**
The NBT contains an "Entities" array that is being ignored by the current parser.