Add shadps4 package

overlays/default.nix

@@ -4,4 +4,5 @@
     llama-cpp = import ./llama-cpp.nix { inherit inputs; };
     printrun = import ./printrun.nix { inherit inputs; };
     citrix = import ./citrix.nix;
+    shadps4 = import ./shadps4.nix;
 }

overlays/shadps4.nix

@@ -0,0 +1,15 @@
+final: prev: {
+  shadps4 = prev.shadps4.overrideAttrs (old: {
+    version = "0.6.0";
+    
+    src = prev.fetchFromGitHub {
+      owner = "shadps4-emu";
+      repo = "shadps4";
+      rev = "15d10e47ea272b1b4c8bf97f2b3bbb406d34b213";
+      fetchSubmodules = true;
+      hash = "sha256-ksIKmijWcRMhCDEi/dodZHiEoIO3CB0BkGn698J7jxI=";
+    };
+
+    patches = [];
+  });
+}