Use a faster comparator for image diff

[teimurjan]

Clear and concise description of the problem

As a developer using VItest, I want to have the fastest image diff out of the box.

I've been digging into the image diff problem for a very long time. I made BlazeDiff, which is beating all existing OSS image diffs and is already widely adopted. @blazediff/core (pure JavaScript approach) is ~50% faster than pixelmatch, using the same API and producing the same results. It weighs twice as much, is actively supported, and is type-safe out of the box. You can check the benchmarks here: https://github.com/teimurjan/blazediff/blob/main/BENCHMARKS.md.

Suggested solution

I want to add a new blazediff comparator.

Alternative

As an alternative, I can replace the existing one (due to 1-1 identity in API & results).

Additional context

BlazeDiff is battle-tested and already running visuals for:

• https://github.com/ant-design/ant-design
• https://github.com/ant-design/x
• https://github.com/antvis/G
• https://github.com/antvis/GPT-Vis
• https://github.com/Shopify/react-native-skia
• https://github.com/vega/vega
• https://github.com/apexcharts/apexcharts.js

Validations

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