modules: move introspection module into inventoryClass submodule

modules/inventoryClass/default.nix

@@ -1,4 +1,4 @@
-{ lib, ... }:
+{ lib, clanLib, config, ... }:
 let
   inherit (lib) types mkOption;
   submodule = m: types.submoduleWith { modules = [ m ]; };
@@ -23,5 +23,17 @@ in
         };
       }));
     };
+    introspection = lib.mkOption {
+      readOnly = true;
+      # TODO: use options.inventory instead of the evaluate config attribute
+      default =
+        builtins.removeAttrs (clanLib.introspection.getPrios { options = config.inventory.options; })
+          # tags are freeformType which is not supported yet.
+          # services is removed and throws an error if accessed.
+          [
+            "tags"
+            "services"
+          ];
+    };
   };
 }

modules/inventoryClass/inventory-introspection.nix

@@ -1,20 +0,0 @@
-{
-  config,
-  lib,
-  clanLib,
-  ...
-}:
-{
-  options.introspection = lib.mkOption {
-    readOnly = true;
-    # TODO: use options.inventory instead of the evaluate config attribute
-    default =
-      builtins.removeAttrs (clanLib.introspection.getPrios { options = config.inventory.options; })
-        # tags are freeformType which is not supported yet.
-        # services is removed and throws an error if accessed.
-        [
-          "tags"
-          "services"
-        ];
-  };
-}