home(gyroflow): add package and module

home/gyroflow/nixos.nix

@@ -0,0 +1,19 @@
+{ pkgs
+, lib
+, config
+, ... }: with lib; let
+  cfg = config.home.gyroflow;
+in {
+  options.home.gyroflow = {
+    enable = mkEnableOption "gyroflow stabilisation software";
+  };
+
+  config = {
+    users.homeModules = [
+      # this module passes gyroflow configuration to home-manager
+      { passthrough.gyroflow = cfg; }
+    ];
+
+    users.home.persist.directories = [ ".config/Gyroflow" ];
+  };
+}