[Feature Request] Test Button

[trv-in-3d]

What would you like implemented?

When editing an effect (printing effect, printing progress effect, etc) it would be helpful if there was a [Test] button to immediately execute the settings as they are in the config dialog [aka - before they are "saved" to make sure they function as expected.] Would probably need a [Stop Test] button also.

[cp2004]

Ignore the last (now) deleted comment...

I forgot what plugin I was in - this is a feature in WS281x LED Status, but for WLED you could just use the WLED interface, since that's where the effects & colour schemes come from, so it should be possible to test whatever you need there.