[clang] [llvm] workflows/release-binaries: Use Wix to create Windows installer (PR #200734)

[Hans Wennborg via cfe-commits]

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@@ -188,6 +188,8 @@ set common_cmake_flags=^
   -DLLVM_ENABLE_RPMALLOC=ON ^
   -DLLVM_ENABLE_PROJECTS="clang;clang-tools-extra;lld" ^
   -DLLVM_ENABLE_RUNTIMES="compiler-rt;openmp" ^
+  -DCPACK_GENERATOR="WIX" ^
+  -DCPACK_WIX_LIGHT_EXTRA_FLAGS="-sval" ^
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zmodem wrote:

At least setting CPACK_WIX_PRODUCT_ICON would be nice. We can probably skip the rest, at least for starters.

https://github.com/llvm/llvm-project/pull/200734