Enhancement: Air validation toggle

[BrickedPlayer]

Description

If a block is placed incorrectly within the hologram and is located in air, it should be highlighted.
This feature should activate only for misplaced blocks.

[SuperLlama88888]

Hi @BrickedPlayer, I have not added this yet due to the performance costs of validating all the air blocks within structures, which are likely to significantly outnumber the 'actual' blocks in structures. However I will try adding this as an optional toggle in the next update.

Thank you for your suggestion!