Use zlib-ng

[t20100]

Following addition of blosc2 (PR #201), blosc2 and others are using zlib.

Yet, Blosc2 can use zlib-ng (sources included in internal-complibs/), and it should also be possible to use zlib-ng as a replacement for zlib for other filters too.

This is need to look at how zlib-ng handles building with SIMD instructions.

[bnavigator]

This already seems to be the case?

hdf5plugin/setup.py

Line 783 in 2782806

zlib_dir = glob('src/c-blosc/internal-complibs/zlib*')[0]

hdf5plugin/src/c-blosc2/internal-complibs/zlib-ng-2.0.7/README.md

Line 1 in 2782806

## zlib-ng

[t20100]

It'a currently using zlib (embedded in cblosc v1), not zlib-ng (embedded in cblosc v2).