Start at login on Linux

[antonio-ramadas]

The app works on Linux, but the right click on top of the icon does not display the list of menus. This is a known Electron limitation.

I expect this problem to be solved by an external npm package. If said package carries more than needed I suggest to learn its implementation and do the same here while referring and acknowledging the work of the original package.

P.S.: startup.js details this problem to a great extent.