Builds Skia libraries for multiple platforms and architectures (static for macOS/Linux, shared for Windows).
Used by skia-pathops to provide precompiled Skia binaries for Python wheels.
CI builds are triggered on tags. Release assets include:
libskia-mac-x64.zip,libskia-mac-arm64.zip,libskia-mac-universal2.ziplibskia-linux-x64.zip,libskia-linux-arm64.ziplibskia-win-x86.zip,libskia-win-x64.zip