ci: support windows-arm64 again

[Taoister39]

Summary

Re-enables Windows ARM64 support in the CI release pipeline and installer.

Changes

.github/workflows/release.yml

• Switch the build step to PowerShell (shell: pwsh)
• Build three separate executables in sequence:
  • nvm-64.exe — compiled for GOARCH=amd64
  • nvm-arm64.exe — compiled for GOARCH=arm64
  • nvm.exe — compiled for GOARCH=386 (fallback)
• Apply the NVM icon to all three executables (was previously only applied to nvm.exe)

nvm.iss

• Add arm64 to ArchitecturesInstallIn64BitMode so the installer runs in 64-bit mode on ARM64 machines
• Ship all three binaries; use Inno Setup Check: functions to install the correct one as nvm.exe based on processor architecture:
  • InstallARM64 — installs nvm-arm64.exe on ARM64 systems
  • InstallX64 — installs nvm-64.exe on x64 systems
  • InstallOtherArch — installs the 32-bit nvm.exe as fallback

[github-actions]

This PR is stale because it has been open 45 days with no activity.

[coreybutler]

I appreciate the contribution.

We will not be releasing anything further on the 1.x.x line. Version 2 is a complete rewrite and this PR is no longer relevant to the new code base.

Native ARM64 support is available in v2.