update ECOSYSTEM.md (#1345)

ECOSYSTEM.md

@@ -22,6 +22,7 @@ If your project isn't listed here and you would like it to be, please feel free
 - [svelte-axum-project](https://github.com/jbertovic/svelte-axum-project): Template and example for Svelte frontend app with Axum as backend
 - [axum-streams](https://github.com/abdolence/axum-streams-rs): Streaming HTTP body with different formats: JSON, CSV, Protobuf.
 - [axum-template](https://github.com/Altair-Bueno/axum-template): Layers, extractors and template engine wrappers for axum based Web MVC applications
+- [axum-guard-logic](https://github.com/sjud/axum_guard_logic): Use AND/OR logic to extract types and check their values against `Service` inputs.
 
 ## Project showcase