[Backport release-25.05] nixos/paperless: expose manage package (#408739)

- There is a new set of NixOS test tools for testing virtual Wi-Fi networks in many different topologies. See the {option}`services.vwifi` module, {option}`services.kismet` NixOS test, and [manual](https://nixos.org/manual/nixpkgs/unstable/#sec-nixos-test-wifi) for documentation and examples.

- The paperless module now has an option for regular automatic export of

  documents data using the integrated document exporter.

- The paperless module now has an option for regular automatic export of documents data using the integrated document exporter.

- Exposed the `paperless-manage` script package via the `services.paperless.manage` read-only option.

- New options for the declarative configuration of the user space part of ALSA have been introduced under [hardware.alsa](options.html#opt-hardware.alsa.enable), including setting the default capture and playback device, defining sound card aliases and volume controls.

  Note: these are intended for users not running a sound server like PulseAudio or PipeWire, but having ALSA as their only sound system.

        Whether to configure Tika and Gotenberg to process Office and e-mail files with OCR.

      '';

    };

    manage = lib.mkOption {

      type = lib.types.package;

      readOnly = true;

      description = ''

        The package derivation for the `paperless-manage` wrapper script.

        Useful for other modules that need to add this specific script to a service's PATH.

      '';

    };

  };

  config = lib.mkIf cfg.enable (

    lib.mkMerge [

      {

        services.paperless.manage = manage;

        environment.systemPackages = [ manage ];

        services.redis.servers.paperless.enable = lib.mkIf enableRedis true;