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

authored by Aleksana and committed by GitHub 130d54a5 97901dc1

+1
+1
pkgs/games/quakespasm/vulkan.nix
··· 112 ylh 113 ]; 114 mainProgram = "vkquake"; 115 }; 116 })
··· 112 ylh 113 ]; 114 mainProgram = "vkquake"; 115 + license = lib.licenses.gpl2Plus; 116 }; 117 })