Automatically support KVM on Linux

[TWiStErRob]

Following this announcement:
https://github.blog/2024-01-17-github-hosted-runners-double-the-power-for-open-source/

It is now possible to enable KVM on ubuntu-latest:
https://twitter.com/colinwhi/status/1749236103956291857

From some empirical non-scientific testing*:
mac boot: 1 min 23 seconds
linux boot (without hardware virtualization): 2 min 23 seconds
linux kvm boot: 15 seconds

* boot = from emulator -avd command to adb shell getprop sys.boot_completed returning 1.

One of my UI test suite (small) went from 12 minutes to 6 minutes via this change. Note that most of this must be down to the Gradle build. I'm yet to try this on a bigger project which is more emulator-heavy.

[TWiStErRob]

On a heavy emulator CI it went from 27 minutes to 17 minutes.

[TWiStErRob]

Oh, I just saw #366, so you're aware. Can it be incorporated into the action so not every user has to do it?

[ychescale9]

I did a quick test but it didn't seem to take effect when running those commands from the action itself. I can make another attempt later unless you want to give it a go?

[TWiStErRob]

I'll let you, you know your way around VMs way more, so you can diagnose easier.

Happy to review and maybe help, if you get stuck. Tag me on a PR.