refactor(flake): move some code out of flake.in.nix

packages/default.nix

@@ -0,0 +1,29 @@
+{
+  inputs,
+  mkVersion,
+  pkgs,
+  ...
+}: {
+  coloryou = pkgs.callPackage ./coloryou {};
+
+  gpu-screen-recorder = pkgs.callPackage ./gpu-screen-recorder {
+    inherit (inputs) gpu-screen-recorder-src;
+  };
+
+  pam-fprint-grosshack = pkgs.callPackage ./pam-fprint-grosshack {
+    inherit (inputs) pam-fprint-grosshack-src;
+  };
+
+  pokemon-colorscripts = pkgs.callPackage ./pokemon-colorscripts {
+    inherit (inputs) pokemon-colorscripts-src;
+    inherit mkVersion;
+  };
+
+  repl = pkgs.callPackage ./repl {};
+
+  trash-d = pkgs.callPackage ./trash-d {
+    inherit (inputs) trash-d-src;
+  };
+
+  yuzu = pkgs.callPackage ./yuzu {};
+}