feat: New flag for passing extra args to run0

[plumj-am]

I wanted to adjust the --background of run0 because the default doesn't work well with my terminal theme. I thought it could be more flexible and opted to create a catch-all approach that allows passing any extra arguments to run0.

I initially tried it as a single string but passing it multiple times is clearer and simpler.

Example wrapper from my NixOS configs:

package = pkgs.symlinkJoin {
  name = "sudo";
  paths = [ inputs.run0-sudo-shim.packages.${pkgs.stdenv.hostPlatform.system}.run0-sudo-shim ];
  nativeBuildInputs = [ pkgs.makeWrapper ];
  postBuild = ''
    wrapProgram $out/bin/sudo --add-flags "--run0-extra-arg=--background="
  '';
};

[LordGrimmauld]

Thanks, this does look helpful. I am happy to prefix any shim-specific flags with --run0-..., and the change itself is nice and small.