modules: add explicit class constraints

lib/modules/inventory/distributed-service/all-services-wrapper.nix

@@ -22,6 +22,7 @@ in
       type = attrsWith {
         placeholder = "mappedServiceName";
         elemType = submoduleWith {
+          class = "clan.service";
           modules = [
             (
               { name, ... }:

lib/modules/inventory/distributed-service/inventory-adapter.nix

@@ -122,6 +122,7 @@ in
       evalServices =
         { modules, prefix }:
         lib.evalModules {
+          class = "clan";
           specialArgs = {
             inherit clanLib;
             _ctx = prefix;