Add Youtube Video Showing How to Package and notarise mac os application

A Mega Mega Thank You for this; you have saved me tens and tens of hours of my life. Kudos to you.

Now, coming to the point.
Today, I faced a big frustration. Actually, I wanted to sign and notarize my application, but all these resources assume you already know this stuff and are very confusing.

After a lot of trial and error, I managed to get the app signing and notarization working. However, I know many developers share this frustration, and more will face it in the future.

To help them, I’m planning to create a YouTube video that walks through the entire process of signing and notarizing an application — in simple, baby steps.

If you could add this video to the [Electron React Boilerplate packaging section](https://electron-react-boilerplate.js.org/docs/packaging), it would be incredibly helpful for countless developers. All it would take is a single line in the docs, but I guarantee that line will save many people from frustration.

Note:
- You can upload it on your own YouTube channel, and the video will be faceless as well (I am simply not after the name).
- I’m the creator of [Botasaurus](https://github.com/omkarcloud/botasaurus), a framework with 1.4K stars, so you can trust that I’m dedicated and that the video will be top-notch.