profile/sync: init from legacy

profiles/sync/default.nix

@@ -0,0 +1,19 @@
+{ config, lib, pkgs, ... }:
+let
+  cfg = config.my.profiles.sync;
+in
+{
+  options.my.profiles.sync = with lib; {
+    enable = mkEnableOption "sync profile";
+  };
+
+  config = lib.mkIf cfg.enable {
+    environment.systemPackages = with pkgs; [
+      croc
+      magic-wormhole
+      nextcloud-client
+      syncthing
+      vdirsyncer
+    ];
+  };
+}