nonguix: Add chromium-binary-build-system.
This build system is an extension to the binary-build-system, designed to abstract some common boilerplate necessary for packaging Chromium based software. If you have a better name, or less verbose at least, please do share your suggestions!
This MR:
- adds the new build system
- applies it where possible
- adds a new VSCodium package implemented with the new build system
- updates google chrome to the latest version
Edited by Giacomo Leidi