Shield bubble fx

[sprunk]

A year ago there was a discussion about shield bubble effects:
https://discord.com/channels/278805140708786177/278908415756206080/1121386537137999942

The tl;dr of the idea was to do something like mechabellum:

It was sort of dropped due to lack of tech at the time though. But now Helwor made a bubble widget:
https://zero-k.info/Forum/Thread/37707

So perhaps it can be adapted for regular shield. Even if not, the ticket is there so it doesnt get lost (dense shield clusters do need to gain some visibility into the contents).