Add axum-negotiate-layer to community projects (#3093)

ECOSYSTEM.md

@@ -51,6 +51,7 @@ If your project isn't listed here and you would like it to be, please feel free
 - [zino](https://github.com/zino-rs/zino): Zino is a next-generation framework for composable applications which provides full integrations with axum.
 - [axum-rails-cookie](https://github.com/endoze/axum-rails-cookie): Extract rails session cookies in axum based apps.
 - [axum-ws-broadcaster](https://github.com/Necoo33/axum-ws-broadcaster): A broadcasting liblary for both [axum-typed-websockets](https://crates.io/crates/axum-typed-websockets) and `axum::extract::ws`.
+- [axum-negotiate-layer](https://github.com/2ndDerivative/axum-negotiate-layer) Middleware/Layer for Kerberos/NTLM "Negotiate" authentication.
 
 ## Project showcase