- Added `html`, `json`, and `rss` to the `search.formats` list in `searx.nix`.
- Enhances flexibility by allowing multiple output formats for search results.
- Moved Searx-related settings from `default.nix` and `nginx.nix` to a dedicated `searx.nix` module for improved modularity and maintainability.
- Updated references and ACME certificate configuration to align with the new structure.
- Simplifies management of Searx service and its associated secrets.
