Toggle transparency of ghosts

[pato]

WHAT?

Make an option to adjust the transparency of ghosts.

WHY?

You put a ton of work into remnants and ruins, yet they are barely visible because ghost entities cover them up.
Also it would be very good for the sake of recording immersive videos.
Alternatively make Ghosts more visible when placed by the player and reduce visibility drastically if they are placed because of destruction.

this goes especially for the purple HP bars. They look ugly.

Doing the same with HP bars in general would smove the whole experience