Setup guide for leptos_oidc and Rauthy

[erlend-sh]

@kerkmann made this: https://crates.io/crates/leptos_oidc

I mentioned Rauthy and so they followed up with this awesome setup guide ✨

https://gitlab.com/kerkmann/leptos_oidc/-/blob/add-rauthy-support/docs/backends/rauthy.md

Might wanna link to that in the readme or docs.

[kerkmann]

Thanks for mentioning it! I've merged the changes to the main: https://gitlab.com/kerkmann/leptos_oidc

Feedback is always welcome, thanks! ❤️

[sebadob]

Oh that's awesome. I didn't know yet, that this crate exists. I am using leptos myself as well in other places and projects and it will be added to the nioca-client in the future.

I actually plan on adding a section to the docs in the future where I describe the setup with different clients as well.