Feat(perf): replace pngjs with node-libpng

[acb122]

I would like to propose removing pngjs for node-libpng which is a native library allowing for much improved performance.

Description

Remove the uses of pngjs for node-libpng. It is much faster. It would also allow to remove the spawn new process code as the speed is now equivelent with using a new process making the code much simpilier and easier to debug.

Motivation and Context

Increase performace Simplify code

How Has This Been Tested?

All tests are passing, just one image needed replacing cause it is checked on the encoded level

Types of Changes

• [ ] Bug fix (non-breaking change which fixes an issue)
• [ ] New feature (non-breaking change which adds functionality)
• [ ] Breaking change (fix or feature that would cause existing functionality to not work as expected)
• [ ] Documentation (adding or updating documentation)
• [ ] Dependency update

Checklist:

• [ x] My change requires a change to the documentation and I have updated the documentation accordingly.
• [x ] My changes are in sync with the code style of this project.
• [x ] There aren't any other open Pull Requests for the same issue/update.
• [x ] These changes should be applied to a maintenance branch.
• [x ] I have added the Apache 2.0 license header to any new files created.

What is the Impact to Developers Using Jest-Image-Snapshot?

Quicker tests

[aloisklink]

I'm not a member of @americanexpress, or a contributor to this repo, but I'm against this.

node-libpng currently only supports Node <=16 Linux/Windows/MacOS x86 64-bit (see https://github.com/Prior99/node-libpng#supported-environments)

There's no support for Node v18, or for ARM based systems, which seems pretty important, since new Macs all have ARM processors. It's up to the maintainers on whether that's worth the speedup that node-libpng might bring.

[10xLaCroixDrinker]

Thanks for calling that out @aloisklink.

@acb122 with that in mind, we'll be closing this.

[aloisklink]

If node-libpng does ever add Node v18 and ARM support and you want to re-open this PR, it's also worth adding some basic benchmarks.

Even though node-libpng is much faster than pngjs, if jest-image-snapshot only spends 1% of the time in PNG parsing, the actual speedup for this project might be tiny, and not worth any future incompatibility issues.