add Windows client dll tar package

[calvin2021y]

There is no Windows client package from download link.

please provide a package to download, or a cross build docker to allow user build them self.

[jzhou77]

We dropped windows support for a long time. See #5135 and https://forums.foundationdb.org/t/foundationdb-windows-download-404s/2784 for discussions.

There are community maintained windows binaries, but I couldn't find where they are.

[calvin2021y]

Is is possible to just provide a client dll for windows ?

Or a proxy client dll, that forwards all traffic into a remote linux client. (read remote ip from ENV )

[pszlendak]

A Windows client would do ...