single microgame should repeat infinitely when testing per-scene

[iznaut]

when in Godot, doing a "Play Scene" while working on a microgame, the project should be smart enough to know you're in the development phase and will want to play it on repeat for testing purposes.

currently, it seems to shuffle through all games instead of limiting it to only the active one.

[paulloz]

I'm already working on the loop, so I'll do that at the same time.