Change runMosaic to support effects

[EpicDima]

An attempt to do https://github.com/JakeWharton/mosaic/issues/3 It works on all samples. I haven't checked for js and native( For jest, it seems that it would be cool to have a MosaicScope with a method for exiting, but it's more difficult to do it correctly

[JakeWharton]

Will have to look when I'm at a computer (on paternity leave until New Year).

Regarding,

For jest, it seems that it would be cool to have a MosaicScope with a method for exiting, but it's more difficult to do it correctly

I think if done properly we shouldn't need a MosaicScope anymore. Granted, we may still want one similar to how Compose Desktop provides a scope (I think with exiting functions, too).

[JakeWharton]

Let's go!