Add support for linux? [meson]

[neutrino2211]

I've managed to get this example running on linux using the meson build system without being invasive on the part of the submodules. Is this something that can be added here?

Here's my implementation https://github.com/neutrino2211/WalnutLinuxSanityCheck

The major additions are in the scripts folder

[Nonoreve]

Its so good you provide extensive installation instructions.

[neutrino2211]

@Nonoreve Yeah. Installation instructions for anything linux are complicated, so I just copied the Vulkan instructions word for word.

[sudopluto]

please see https://github.com/TheCherno/WalnutAppTemplate/pull/4 for premake based version of linux support