[zlib] Add win32/zlib1.rc from upstream

Downstream users building zlib for Windows with CMake were broken by the
1.3.2 update due to the lack of this file, presumably because of
https://github.com/madler/zlib/commit/1af1bb6ce4b8e8d0b5b34985bafe7a8c3dd0e173

Bug: 486655259
Change-Id: Ie5057d7fb02c519448fbf2a86335b568217593c7
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/7644770
Auto-Submit: Hans Wennborg <hans@chromium.org>
Reviewed-by: Adenilson Cavalcanti <cavalcantii@chromium.org>
Commit-Queue: Adenilson Cavalcanti <cavalcantii@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1595962}
NOKEYCHECK=True
GitOrigin-RevId: 7061cd3c68d6a899749b098171ca18313b57b4f1