feat: Add Windows ARM64 MSI support

[Dylan-M]

Proposed Change

Adds Windows ARM64 support for the collector MSI installer.

• Reintegrate Windows builds into the unified .goreleaser.yml with CGO_ENABLED=0 (no cgo usage in the codebase), removing the separate .goreleaser-windows.yml
• Add build-windows-arm64 Makefile target
• Upgrade WiX from 3.10.4 to 3.14.1 for native -arch arm64 support in candle.exe
• Update product.wxs to handle sys.BUILDARCH=arm64
• Update CI workflows (release.yml, release-test.yml, manual_msi_build.yml) with a matrix strategy building amd64 on windows-2022 and arm64 on windows-11-arm
• Add arm64 binaries to license scan in manual_multi_build.yml
• Update local build scripts (build-msi.sh, windows/Makefile) for multi-arch MSI builds

Validated on an Azure Windows 11 ARM64 VM: MSI installs, service starts, binary runs natively.

release-test GH action runs, and succeeds correctly
https://github.com/observIQ/bindplane-otel-collector/actions/runs/22149106975

Prerequisite must be merged first:
#3144

Checklist

• Changes are tested
• CI has passed

[mrsillydog]

Have you done any testing with the MSI produced by your run of release-test?

[Dylan-M]

Have you done any testing with the MSI produced by your run of release-test?

Installed and running on win11aarch64 in our Azure environment.