Add target for x86_64-pc-windows-gnu

[ahaoboy]

Is it possible to support the build for x86_64-pc-windows-gnu?

cargo build --target x86_64-pc-windows-gnu

  Downloading https://github.com/denoland/rusty_v8/releases/download/v0.83.2/rusty_v8_release_x86_64-pc-windows-gnu.lib...
  HTTP Error 404: Not Found
  Python downloader failed, trying with curl.

[humphreylee]

Second that motion. I needed this to use charming-rs. on Windows-gnu. Thanks.

[ckrenslehner]

Hi! Maybe it would be possible to throw a more specific compiler error, which states that the target is not supported. Thanks for the great project! :-)

[Naxdy]

I second this. x86_64-pc-windows-gnu would make cross-compiling applications using V8 for Windows targets on Linux hosts a lot easier, which is especially important for things like CI workflows.