feat: support windows arm64

[Brooooooklyn]

No description provided.

[Copilot]

Pull request overview

This PR adds support for Windows ARM64 platform (aarch64-pc-windows-msvc) to the canvas project. The changes enable building, testing, and distributing native binaries for Windows on ARM64 devices.

Key changes:

• Added Windows ARM64 target configuration to build scripts and package.json
• Created platform-specific npm package for win32-arm64-msvc
• Updated CI/CD workflows to build and test on Windows ARM64 runners
• Modified pathkit tests to skip flaky tests on Windows ARM64 platform

Reviewed changes

Copilot reviewed 7 out of 7 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
scripts/utils.mjs	Added library path mapping for aarch64-pc-windows-msvc target
scripts/build-skia.js	Added Skia build configuration with ARM64 target CPU flag
package.json	Added aarch64-pc-windows-msvc to napi targets list
npm/win32-arm64-msvc/package.json	Created new platform-specific npm package configuration
test/pathkit.spec.ts	Added platform-specific test skip conditions for ARM64 Windows
.github/workflows/skia.yaml	Added separate build job for Windows ARM64 Skia compilation
.github/workflows/CI.yaml	Added build configuration and dedicated test job for Windows ARM64

Comments suppressed due to low confidence (1)

scripts/build-skia.js:201

• The value assigned to ExtraCflags here is unused.

    ExtraCflags = `"-march=armv7-a", "-mthumb", "-mfpu=neon"`

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[Copilot]

The new npm package is missing a README.md file. All other platform-specific packages under npm/ include a README.md that documents which target triple the package is for. For consistency, this package should include a README.md similar to npm/win32-x64-msvc/README.md.