[Library] Update zlibng (#1255)

* Update zlibng

* Set cmake path more directly in zlibng to hopefully fix an issue with the build on drone

* I'm dumb, missing / in path

* Mackal helps with a dumb gitignore issue

* Adding all the files, not sure what's ignoring them and im tired of looking

* Some tweaks to zlibng build to hopefully get it to build properly. works on msvc now

libs/zlibng/test/README.md

@@ -0,0 +1,36 @@
+Contents
+--------
+
+|Name|Description|
+|-|-|
+|[CVE-2003-0107.c](https://nvd.nist.gov/vuln/detail/CVE-2003-0107)|Buffer overflow in the gzprintf function, requires ZLIB_COMPAT|
+|[CVE-2002-0059](https://nvd.nist.gov/vuln/detail/CVE-2002-0059)|inflateEnd to release memory more than once|
+|[CVE-2004-0797](https://nvd.nist.gov/vuln/detail/CVE-2004-0797)|Error handling in inflate and inflateBack causes crash|
+|[CVE-2005-1849](https://nvd.nist.gov/vuln/detail/CVE-2005-1849)|inftrees.h bug causes crash|
+|[CVE-2005-2096](https://nvd.nist.gov/vuln/detail/CVE-2005-2096)|Buffer overflow when incomplete code description
+|[GH-361](https://github.com/zlib-ng/zlib-ng/issues/361)|Test case for overlapping matches|
+|[GH-364](https://github.com/zlib-ng/zlib-ng/issues/364)|Test case for switching compression levels|
+|[GH-382](https://github.com/zlib-ng/zlib-ng/issues/382)|Test case for deflateEnd returning -3 in deflate quick|
+
+Copying
+-------
+
+Some of the files in _test_ are licensed differently:
+
+ - test/data/fireworks.jpeg is Copyright 2013 Steinar H. Gunderson, and
+   is licensed under the Creative Commons Attribution 3.0 license
+   (CC-BY-3.0). See https://creativecommons.org/licenses/by/3.0/
+   for more information.
+
+ - test/data/paper-100k.pdf is an excerpt (bytes 92160 to 194560) from the paper
+   “Combinatorial Modeling of Chromatin Features Quantitatively Predicts DNA
+   Replication Timing in _Drosophila_” by Federico Comoglio and Renato Paro,
+   which is licensed under the CC-BY license. See
+   http://www.ploscompbiol.org/static/license for more information.
+
+ - test/data/lcet10.txt is from Project Gutenberg. It does not have expired 
+   copyright, but is still in the public domain according to the license information.
+   (http://www.gutenberg.org/ebooks/53).
+
+ - test/GH-382/defneg3.dat was the smallest file generated by Nathan Moinvaziri
+   that reproduced GH-382. It is licensed under the terms of the zlib license.