[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/zlib.pc.cmakein

@@ -1,12 +1,12 @@
 prefix=@CMAKE_INSTALL_PREFIX@
-exec_prefix=@CMAKE_INSTALL_PREFIX@
-libdir=@INSTALL_LIB_DIR@
-sharedlibdir=@INSTALL_LIB_DIR@
-includedir=@INSTALL_INC_DIR@
+exec_prefix=${prefix}
+libdir=@PC_LIB_INSTALL_DIR@
+sharedlibdir=${libdir}
+includedir=@PC_INC_INSTALL_DIR@
 
 Name: zlib@SUFFIX@
 Description: zlib-ng compression library
-Version: @zlib_VERSION@
+Version: @ZLIB_FULL_VERSION@
 
 Requires:
 Libs: -L${libdir} -L${sharedlibdir} -lz@SUFFIX@