command-line switches: fullscreen mode and resolution

[MaximilianMrkwrt]

Apparently there are two program args at the moment: user-data path and path of cec-client. It would be nice to have additionally command-line switches for

• fullscreen mode and
• resolution.

Use-case
I start Emby with xinit on a desktopless linux on startup. The default resolution is 720x480px. It would be nice to start Emby per one-liner, rather than by editing ~/.config/Electron/windowstate.json.

Also parsing double hyphen options like

electron main.js --fullscreen

would be nice (for example with the help of the yargs package).