DKMS build/packaging

[amezin]

• Implement 'make install'

• Add CI workflow

Based on liquidtux-dkms-git from AUR.

Now distro dkms packages should be able to simply do:

make DESTDIR=... install

[amezin]

I'd like to have automatic DKMS test before moving files around

[jonasmalacofilho]

LGTM, but let me test the necessary changes to the AUR PKGBUILD before merging this. I'll try to do that later today.