Support debug/release distinction in FindZstd

Summary: This gets Folly working with the zstd package provided by vcpkg.

Reviewed By: yfeldblum

Differential Revision: D8176531

fbshipit-source-id: 05fdd5915a677a862791cfcc5587f7a396fb4c51

CMake/FindZstd.cmake

@@ -7,7 +7,12 @@
 #
 
 find_path(ZSTD_INCLUDE_DIR NAMES zstd.h)
-find_library(ZSTD_LIBRARY NAMES zstd)
+
+find_library(ZSTD_LIBRARY_DEBUG NAMES zstdd)
+find_library(ZSTD_LIBRARY_RELEASE NAMES zstd)
+
+include(SelectLibraryConfigurations)
+SELECT_LIBRARY_CONFIGURATIONS(ZSTD)
 
 include(FindPackageHandleStandardArgs)
 FIND_PACKAGE_HANDLE_STANDARD_ARGS(