Add prebuild Electron for arm64

[dennisameling]

Identify the Bug

Currently, including keytar as a dependency results in the following error on Windows arm64:

error C:\repos\desktop\app\node_modules\keytar: Command failed.
Exit code: 1
Command: prebuild-install || node-gyp rebuild
Arguments:
Directory: C:\repos\desktop\app\node_modules\keytar
Output:
prebuild-install WARN install No prebuilt binaries found (target=9.3.1 runtime=electron arch=arm64 libc= platform=win32)

C:\repos\desktop\app\node_modules\keytar>if not defined npm_config_node_gyp (node "C:\Program Files\nodejs\node_modules\npm\bin\node-gyp-bin\\..\..\node_modules\node-gyp\bin\node-gyp.js" rebuild )  else (node "" rebuild )
gyp info it worked if it ends with ok
gyp info using node-gyp@5.1.0
gyp info using node@14.13.0 | win32 | arm64
gyp info find Python using Python version 3.8.5 found at "C:\Python38\python.exe"
gyp info find VS using VS2019 (16.7.30330.147) found at:
gyp info find VS "C:\Program Files (x86)\Microsoft Visual Studio\2019\BuildTools"

Building the projects in this solution one at a time. To enable parallel build, please add the "-m" switch.
  async.cc
  main.cc
  keytar_win.cc
  win_delay_load_hook.cc
C:\repos\desktop\app\node_modules\keytar\src\main.cc(1,10): fatal error C1083: Cannot open include file: 'napi.h': No such file or directory [C:\repos\desktop\app\node_modules\keytar\build\keytar.vcxproj]
C:\repos\desktop\app\node_modules\keytar\src\async.cc(4,10): fatal error C1083: Cannot open include file: 'napi.h': No such file or directory [C:\repos\desktop\app\node_modules\keytar\build\keytar.vcxproj]
gyp ERR! build error
gyp ERR! stack Error: `C:\Program Files (x86)\Microsoft Visual Studio\2019\BuildTools\MSBuild\Current\Bin\MSBuild.exe` failed with exit code: 1
gyp ERR! stack     at ChildProcess.onExit (C:\Program Files\nodejs\node_modules\npm\node_modules\node-gyp\lib\build.js:194:23)
gyp ERR! stack     at ChildProcess.emit (events.js:314:20)
gyp ERR! stack     at Process.ChildProcess._handle.onexit (internal/child_process.js:276:12)
gyp ERR! System Windows_NT 10.0.19042
gyp ERR! command "C:\\Program Files\\nodejs\\node.exe" "C:\\Program Files\\nodejs\\node_modules\\npm\\node_modules\\node-gyp\\bin\\node-gyp.js" "rebuild"
gyp ERR! cwd C:\repos\desktop\app\node_modules\keytar
gyp ERR! node -v v14.13.0

Related issue: #297

Description of the Change

This PR adds prebuilds for Electron on arm64, which solved the issue for me when trying locally and adding Keytar through yarn link keytar (while trying to add support for arm64 to GitHub Desktop desktop/desktop#9691)

Alternate Designs

Possible Drawbacks

Verification Process

Release Notes

• Add prebuild Electron binaries for arm64

[shiftkey]

@dennisameling thanks for submitting this. The changes looks straight-forward, and it's neat that this support is already there in prebuild.

I'm going to look at addressing this as well as #317 in the next update, hopefully this week. I'll let you know if I have any questions or feedback about it.

[shiftkey]

Thanks for the contribution @dennisameling!