vkquake: add `meta.license` (#424801)

Aleksana 130d54a5 97901dc1

Changed files
+1
pkgs
games
quakespasm
+1
pkgs/games/quakespasm/vulkan.nix
···
ylh
];
mainProgram = "vkquake";
+
license = lib.licenses.gpl2Plus;
};
})