Performance optimization, allow for "init" and "await" mode

[consideRatio]

Currently this action installs and awaits readiness. But, it could be useful to install, do something else, then await readiness.

I suggest we could allow this action to be called either normally, but also in "init" or "await" mode where the normal mode is equal to "init" + "await". By doing that, one could run other things in between.

[manics]

Is it worth spliting it into two actions instead?

[consideRatio]

Is it worth spliting it into two actions instead?

Oh nooo I absolutely don't think that, I'd rather not do this at all if it would come to that.

EDIT: I just wanted to clarify, I feel that it's a quite fancy feature that one can live without, but one that could reduce test times with some tens of seconds perhaps which can be nice for some setups to make use of. I think the complexity introduced could be quite low in this action, even though notable.