Added Debian bullseye support for the installer

[marnunez]

Brief summary of changes

Changed to use ID of OS instead of NAME Only use VERSION_ID if ID == "ubuntu"

Testing I've completed

Built on my own Debian bullseye/sid

[aymanhab]

Thanks for submitting this @marnunez, quick feedback:

1. whitespace/tab changes makes it hard to see the actual diffs, can you fix that?
2. In our current work-from-home environment, and moving forward it is hard to access/test linux installers, so it would be good to leverage/test the artifacts produced by github actions on actual machines running linux.

[marnunez]

1. Sorry about the autoformatting, my bad.
2. I see what you mean, how would you suggest to approach this? There's no ready github actions build for a Debian environment, but something more fancy using self-hosted runners might be done if needed. As for now, I did build and install this PR with the Debian machine I'm using, for what it's worth...

[aymanhab]

@marnunez If you fix the formatting, and @halleysfifthinc approves the change (to make sure it doesn't break his changes, I don't have access to either platforms) that would be great. Also please include in this PR, adding your name to the list of contributors in the contributing.md file. Thank you

[halleysfifthinc]

Regarding the Actions CI artifacts, I believe what @aymanhab is suggesting is to check that the installer produced by CI works by test installing it on your machine.

[artgodwin]

I have run the build script under Debian bullseye and found 1 issue : it needs default-jdk in the preinstalls.

However, the installation crashes very easily including on the examples. Not sure if this is a problem with any older libs included in debian