Uses/electronfix.mk: Framework for quick porting of Electron apps.

The idea behind this USES is to take a binary distribution of some Electron app
and replace Linux binaries with the native ones. Not only this allows for
quick porting, but it is also a way to get closed-source Electron apps (Obsidian,
XMind) working on FreeBSD.

Sponsored by: Serenity Cybersecurity, LLC