neptune: lan hosts can stream audio to speakers

modules/clan/pulse-stream/flake-module.nix

@@ -0,0 +1,9 @@
+{ lib, ... }:
+let
+  module = lib.modules.importApply ./default.nix { };
+in
+{
+  clan.modules = {
+    pulse-stream = module;
+  };
+}