Add Baxe to ECOSYSTEM.md

Add link to baxe-rs to ECOSYSTEM.md

ECOSYSTEM.md

@@ -54,6 +54,7 @@ If your project isn't listed here and you would like it to be, please feel free
 - [axum-negotiate-layer](https://github.com/2ndDerivative/axum-negotiate-layer): Middleware/Layer for Kerberos/NTLM "Negotiate" authentication.
 - [axum-kit](https://github.com/4lkaid/axum-kit): Streamline the integration and usage of axum with SQLx and Redis.
 - [tower_allowed_hosts](https://crates.io/crates/tower_allowed_hosts): Allowed hosts middleware which limits request from only allowed hosts.
+- [baxe](https://github.com/zyphelabs/baxe): Simple macro for defining backend errors once and automatically generate standardized JSON error responses, saving time and reducing complexity 
 
 ## Project showcase