Enable configuration overrides via matcher

[chrismansfield]

This adds the possibility to override the settings detectAntialiasing, colorThreshold, pixelThresholdAbsolute and pixelThresholdRelative via parameters to the matcher;

expect(myFlakyImage).toMatchImageSnapshot({
       detectAntialiasing: true,
       colorThreshold: 0.1,
       pixelThresholdAbsolute: 25,
       pixelThresholdRelative: 0.1
});

This fixes #72

[Prior99]

I am currently very busy, I am sorry that I did not yet have the time to review this :(

[tujoworker]

Thanks for the PR! This looks promising 🙌 very good work @chrismansfield