[zlib] Only install z.dll

[Neumann-A]

Describe the bug
Somehow upstream decided to do a radical name changes about the zlib1.dll. I think vcpkg at least needs to create a link from zlib1.dll to z.dll to make sure stuff which expects zlib1.dll via Load_Library does not get broken.

Environment

• OS: Windows

[Osyotr]

https://github.com/madler/zlib/blob/f9dd6009be3ed32415edf1e89d1bc38380ecb95d/contrib/CMakeLists.txt#L60

[dg0yt]

If it is the same binary with a different name, why not solve it in deployment? There is no point in having the DLL twice in the vcpkg install tree.