Warn about VMs

[meisenzahl]

Closes #323

Shows a warning as first view if running in a virtualized environment.

Simple solution

Shutdown button

Maybe a bit too much with a suggested shutdown button.

[meisenzahl]

@cassidyjames sorry I was not aware of #326.

Last commit changed the layout based on your PR:

[cassidyjames]

@meisenzahl shouldn't this be a part of CheckView where we perform other checks before installing?

[meisenzahl]

@cassidyjames please excuse the confusion with your PR. There is now a warning when it detects that Installer is running in a virtual machine. I took the logic almost 1:1 from your PR. In addition, I have managed to display several warnings one after the other.

Peek.2021-12-08.20-20.mp4

The checks are not executed for

• Try Demo Mode
• Custom Install

Let's try to fix this in a follow-up PR.

[danirabbit]

I can confirm that this works as intended and that checkview code looks really not fun to work, so thank you for working on this!