refactor folder structure

hosts/nb/modules/sway/social.nix

@@ -0,0 +1,11 @@
+{ pkgs, ... }:
+
+let
+  socialDesktopItem = pkgs.makeDesktopItem {
+    name = "social";
+    desktopName = "Firefox browser with social profile";
+    exec = "firefox -P social";
+  };
+in {
+  environment.systemPackages = [ socialDesktopItem ];
+}