Use interprocedural optimization on Windows

Author: radarhere

winbuild/build_prepare.py

@@ -396,6 +396,7 @@ def cmd_msbuild(
                 "-DAVIF_LIBYUV=LOCAL",
                 "-DAVIF_CODEC_AOM=LOCAL",
                 "-DCMAKE_POLICY_VERSION_MINIMUM=3.5",
+                "-DCMAKE_INTERPROCEDURAL_OPTIMIZATION=ON",
                 build_type="MinSizeRel",
             ),
             cmd_xcopy("include", "{inc_dir}"),