Describe the feature or problem you’d like to solve

Please add support for Windows on ARM (e.g. Surface Pro X). Currently, only a x64 build of GitHub Desktop is available, because of which GitHub Desktop doesn't boot at all on Windows on ARM. This platform can either emulate 32-bit apps (slower performance and more battery drain) or run native Windows on ARM apps.

Proposed solution

Windows on ARM for Electron is supported in Electron 6.0.8 and later. Therefore, it should be feasible now to offer an ARM build for Windows.

• Upgrade Electron to v7: Upgrade Electron from v5 to v7 #8967
• Follow Electron's instructions to create a Windows on ARM build. This way, we can find out what's potentially not working yet on the ARM platform.
• Other requirements can be found in Add Windows ARM64 + Apple Silicon support #9691

This will allow Windows on ARM users to use GitHub Desktop.

Additional context

#6874 won't really do the trick, as it will only trigger emulation on the ARM platform which causes performance loss and battery drain.