How to integrate multiple point clouds into VoxelBlockGrid for later mesh extraction

[frankneumann]

Checklist

• I have searched for similar issues.
• For Python issues, I have tested with the latest development wheel.
• I have checked the release documentation and the latest documentation (for main branch).

Proposed new feature or change

After discussing with several knowledgable people in Open3D, we did not find a way to integrate multiple point clouds in a VoxelBlockGrid. The VoxelBlockGrid seems to support only RGB-D images at the moment.
The aim is to extract a mesh using marching cubes.
Is there any way to do this?

References

In the following issue:
#4515
people suggest to use the VoxelBlockGrid.
But unfortunately it does not support the use case.

Additional information

No response