Structure hight

[Produktecheck]

Is your feature request related to a problem? Please describe.
The problem I'm encountering is that when I spawn an underwater structure, there is no way to adjust or determine its height. This can result in the structure being partially submerged in water and partially above the water surface.

Describe the solution you'd like
I would like the ability to adjust the height of underwater structures when spawning them. This would ensure that the structure is properly positioned and not partially submerged or floating above the water surface.

Describe alternatives you've considered

Additional context
This feature would greatly improve the accuracy and usability of spawning underwater structures in the game. It would prevent issues where structures are not correctly positioned in relation to the water level.