use module-based-service for hostapd

modules/hostapd/default.nix

@@ -0,0 +1,13 @@
+{ lib, pkgs, config, ...}:
+let
+  inherit (lib) mkOption types;
+in {
+  options = {
+    system.service.hostapd = mkOption {
+      type = types.functionTo types.package;
+    };
+  };
+  config = {
+    system.service.hostapd = pkgs.callPackage ./service.nix {};
+  };
+}