broke up files/shell module

modules/home-manager/files.nix

@@ -0,0 +1,9 @@
+{
+  flake.homeModules.files = { pkgs, ... }:
+  {
+    home.packages = with pkgs; [
+      gdu
+      lf
+    ];
+  };
+}

modules/home-manager/shell.nix

@@ -0,0 +1,10 @@
+{ inputs, ... }:
+{
+  flake.homeModules.shell = {
+    imports = with inputs.self.homeModules; [
+      zsh
+      files
+      docker
+    ];
+  };
+}