fix boot devices steamdeck, add ykfde

utils/pkgs/ykfde/default.nix

@@ -0,0 +1,11 @@
+{ pkgs, lib, stdenv }:
+
+stdenv.mkDerivation {
+  name = "ykfde";
+  src = ./scripts;
+  nativeBuildInputs = [ makeWrapper ];
+  installPhase = ''
+    mkdir -p $out/bin
+    install -D --target $out/bin *
+  '';
+}