Zstdify: A Pure TypeScrpt Zstd Re-Implementation

Pure JavaScript/TypeScript zstd compression/decompression library. No native dependencies, works in Node.js and browsers.

https://github.com/bhouston/zstdify

@donmccurdy I did some benchmarks and this is 80% as fast as the zstddec package but 1/5 the size. Zstdify is 7.67 KiB bundled/compressed while zstddec is 40.66 KiB.
@BenHouston3D @donmccurdy The claims *really* did not add up for me - zstd does not decompress this quickly, unless your data is just not compressible at all! - so I tried this, and on a non-zstd UASTC ktx2 file I'm getting ~100 MB/s decode performance. Native zstd decompresses at 1.7 GB/s. zstddec is about 1 GB/s. Your binary benchmarks are not using compressible data.
@zeux @donmccurdy you are right. I will fix this in the next few days. I have to change the test harness.