Possible to have it pass when no files are detected?

[fgblomqvist]

For the sake of setting up scaffolds and the like, it would be nice to have a flag for allow wtr to pass if it finds no files. Perhaps with a warning that it couldn't find any files.

Right now, if I run wtr and it doesn't find any files, it throws with this message:

Error: Could not find any test files with pattern(s): src/**/*.test.tsx