move home-manager config to subdirectory

home/config.nix

@@ -0,0 +1,19 @@
+let
+  unstable = import <nixos-unstable> { }; 
+  stable = import <nixpkgs> {};
+  nur = import <nur> { pkgs = unstable; };
+in
+{
+  allowUnfree = true;
+ 
+  packageOverrides = pkgs: {
+    unstable = unstable;
+    nur = nur;
+    dan = import <dan> {
+      pkgs = unstable;
+    };
+    danstable = <dan> {
+      pkgs = stable;
+    };
+  };
+}