Changes to support axum 0.8

[CristianCapsuna]

Hi guys. Very excited to make my first, small, contribution.

Before this PR can be closed, the server_fn and server_fn_macro dependencies need to be pointed to their released crates once those are available.

I was not able to do the make tests but I don't think it's because of this. See below. Any guidance on how I could make this work?

I plugged this is my wannabe website project and it worked fine.

[CristianCapsuna]

The change to the cli/src/serve/server.rs was done after reading this.

Are there any other tests I should do for the fullstack-auth example? Personally I am not fond of it. I have chosen to use Max Countryman's tower-sessions and axum-login as I found them easier to understand. The community seems to agree with that sentiment looking at the stars for the repos. At some point I will make an example for it.

Lastly, I noted that the command used in the CI/CD pipeline for checking is cargo check --workspace --all-features --all-targets. The latest version of the Contributing page suggests using cargo check --workspace --examples --tests. The former does not show any issues where latter does. Is there a way to submit an update to the docs page?

[CristianCapsuna]

@ealmloff would you have any guidance on what the problem is with the playwright test?

[ealmloff]

@ealmloff would you have any guidance on what the problem is with the playwright test?

My guess is some of the CLI changes are causing it to not proxy the fullstack server. Try going into one of the playwright tests and running the server command manually then opening the site