feat: Add axum-casbin-auth and axum-middleware-example (#1357)

Co-authored-by: David Pedersen <david.pdrsn@gmail.com>

ECOSYSTEM.md

@@ -23,6 +23,7 @@ If your project isn't listed here and you would like it to be, please feel free
 - [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.
+- [axum-casbin-auth](https://github.com/casbin-rs/axum-casbin-auth): Casbin access control middleware for axum framework
 - [aide](https://docs.rs/aide): Code-first Open API documentation generator with [axum integration](https://docs.rs/aide/latest/aide/axum/index.html).
 - [axum-jsonschema](https://docs.rs/axum-jsonschema/): A `Json<T>` extractor that does JSON schema validation of requests.
 
@@ -47,6 +48,7 @@ If your project isn't listed here and you would like it to be, please feel free
 - [axum_admin](https://github.com/lingdu1234/axum_admin): An admin panel built with **axum**, Sea-orm and Vue 3.
 - [rgit](https://git.inept.dev/~doyle/rgit.git/about): A blazingly fast Git repository browser, compatible with- and heavily inspired by cgit.
 - [Petclinic](https://github.com/danipardo/petclinic): A port of Spring Framework's Petclinic showcase project to Axum
+- [axum-middleware-example](https://github.com/casbin-rs/axum-middleware-example): A authorization application using Axum-web, Casbin and Diesel, with JWT support.
 
 [Realworld]: https://github.com/gothinkster/realworld
 [SQLx]: https://github.com/launchbadge/sqlx