[Feature Request] Debug tool to show coordinates of the voxel we're looking at

[gab-eidos]

The idea is to display the coordinates of the voxel in front of us for debug purposes. It could take the form of text around the same location where debug text for meshing is displayed.

Would ideally be available both in the editor and in play mode.

In the editor I'd like to see the coordinates of the voxel I'm pointing to with the mouse cursor.

In play mode I'd typically want to know which voxel I'm looking at with the camera.