tadpole: Add modules directory

hosts/tadpole/configuration.nix

@@ -5,6 +5,7 @@
     [
       ../../config-manager/default.nix
       ./hardware-configuration.nix
+      ./modules
     ];
 
   nix.settings.experimental-features = [ "nix-command" "flakes" ];

hosts/tadpole/modules/default.nix

@@ -0,0 +1,12 @@
+{ lib, ... }:
+let
+  toModulePath = dir: _: ./. + "/${dir}";
+  filterDirs = dirs: lib.attrsets.filterAttrs (_: type: type == "directory") dirs;
+in
+{
+  imports = lib.mapAttrsToList toModulePath (filterDirs (builtins.readDir ./.));
+
+  config = {
+    mod = {};
+  };
+}