Adapt electron-deeplink code as an interface for our app

[reynoldsalec]

Our goal is to have a unified way to listen for deeplink requests across all operating systems. To have that work, we need to disable the bindings that the electron-deeplink package makes on MacOS (darwin), since Electron now handles those natively and it breaks our dev build.

1. Copy the main index.ts
2. Convert to javascript
3. Remove the electronDeepLink const and anything referencing it.
4. Try requiring this new file as Deeplink in our app's backend main.js...this may just work. If it doesn't, I'm guessing we'll want to vendorize the entirety of electron-deeplink

Eventually the maintainer of electron-deeplink will be implementing something similar, so in the future we may be able to use the stock electron-deeplink package.

[reynoldsalec]

Ok, I got a version of this that allows the MacOS to build.

I believe the key here is basically removing the #setAppProtocol functionality...this only runs for MacOS on Dev and seems to setup the plist entry that MacOS no longer needs due to Electron's native handling. See https://github.com/glawson/electron-deeplink/blob/master/src/index.ts#L110 for reference on that function.

Going to pass this by @pirog (and @labboy0276 probably good to make sure I didn't fubar something for Linux).