Possibility to not execute command and configure coverage report directory

[svsool]

Hi,

As an idea it would be nice to have a possibility to configure coverage report directory instead of executing a test command. I think running tests multiple times because of coverage comment / annotations might cost more as well as take longer.

I think for now I can provide noop test command and put report in the cwd directory and it will work, but still it would be nice to have an explicit option for this case.

Here is a good example of parameters https://github.com/codecov/codecov-action this action can accept.

In one of my workflows I use directory parameter.

Thank you!