Refactor Armbian version detection and add support for ubuntu-based armbian detection

[JohnTheCoolingFan]

Ubuntu can be used to build Armbian, it is one of the official bases for Armbian. This allows the detection of Armbian in case it is based on Ubuntu.

[CarterLi]

Please reuse code of debian flavors.

[JohnTheCoolingFan]

The debian-derived detection function doesn't run if the id is Ubuntu, which is the case for an ubuntu-based Armbian image. It will still need to be handled in both Ubuntu and debian variant detection. If you want me to just refactor so that Armbian detection uses a common function in both Ubuntu and debian flavours detection then that's fine, but I don't completely understand what you mean.

[CarterLi]

refactor so that Armbian detection uses a common function in both Ubuntu and debian flavours detection

I mean this

[JohnTheCoolingFan]

Alright, refactored the armbian detection. The version detection is in a single function, which also sets idLike based on the original id. This is then used in both getUbuntuFlavour and detectDebianDerived.

[CarterLi]

Thanks.

[CarterLi]

Since it's called armbian, I assume it supports only arm32 and aarch64? Is #if __arm__ || __aarch64__ ok?

[JohnTheCoolingFan]

While the project was initially aimed at arm SBCs, it currently supports x86_64 as well, and I think I've heard something about risc-v boards. So no, it shouldn't be limited to arm.

UPD: the website has images for aarch64, armhf, amd64 and riscv64