Add ARM64 build instructions and release

[lexcyn]

Since Electron has native ARM64 support for Windows, it's very easy to create an ARM64 version of Caprine. Simply follow the Electron instructions on how to set up your build environment on your ARM system (ie: install correct arch versions of npm, etc), then you can just change the following in package.json:

"scripts": { "build": "electron-builder",
This will allow you to build and package the ARM64 version:

Documentation:

https://learn.arm.com/learning-paths/laptops-and-desktops/electron/how-to-2/
https://www.electronjs.org/docs/latest/tutorial/forge-overview