Configurable timeout for tests

[WesCossick]

When running the test script in a test project, currently Rugged will wait indefinitely. Ideally, though, it would timeout after some period of time. I'd suggest a default timeout of 30s, with the option to configure this via the config file.

I imagine there'd be many areas where we could eventually allow configurable timeouts, so maybe we could add a timeouts object to the config file, with an option inside of it called tests. So it'd look like:

module.exports = {
    timeouts: {
        tests: 123,
    },
};

In the future, we could add timeouts.??? for other things we want to impose configurable timeouts on.