The attic-client has been added to the packages for the x86_64-linux system. This change enables interaction with the Attic distributed storage system, expanding the capabilities of this system setting.
This commit includes the atticd service to the sgx-nixos system. The `atticd.nix` file has been added with default configuration and the attic service has been included in imports in `default.nix`. Modifications were made in `flake.nix` and `flake.lock` to integrate attic dependencies.