Flatpak support

[jbtrystram]

Consider shipping a flatpak as well for linux users :)

I might try to do that as a PR if i can't get the original tool work through wine/proton

[andrey-pr]

Its good idea. As far as I know, I should just simply add "flatpack" target to electron-builder configuration. I'll try on this week

[andrey-pr]

I'm adding support of flatpak in separate branch, now its buildable, but I have problem with access ti serial ports

(node:3) UnhandledPromiseRejectionWarning: Error: spawn udevadm ENOENT
    at Process.onexit (node:internal/child_process:283:19)
    at onErrorNT (node:internal/child_process:476:16)
    at processTicksAndRejections (node:internal/process/task_queues:82:21)
(node:3) UnhandledPromiseRejectionWarning: Unhandled promise rejection. This error originated either by throwing inside of an async function without a catch block, or by rejecting a promise which was not handled with .catch(). To terminate the node process on unhandled promise rejection, use the CLI flag `--unhandled-rejections=strict` (see https://nodejs.org/api/cli.html#cli_unhandled_rejections_mode). (rejection id: 5)

There are not too much articles about serial ports in flatpak; @jbtrystram do you have any experience with it?

[jbtrystram]

there is a --device flag when launching the flatpak I think, but i don't know too much about that sorry. Maybe look into the people that use flatpaks IDEs to program arduinos and ESPs ?