refactor(examples): add rendezvous point fixed keypair

[bgins]

Description

Related: #4380.

Change checklist

• I have performed a self-review of my own code
• I have made corresponding changes to the documentation (No changes needed)
• I have added tests that prove my fix is effective or that my feature works
• A changelog entry has been made in the appropriate crates

[bgins]

I was a bit terse about the checklist because it ends up the commit. Let me know docs, changelog entries, or tests should be added.

[thomaseizinger]

I was a bit terse about the checklist because it ends up the commit. Let me know docs, changelog entries, or tests should be added.

I've updated the description for you, thanks! :)

[thomaseizinger]

Thanks for picking this up again!

One suggestion, otherwise good to merge :)

PS: Are you interested in adding https://github.com/ipvm-wg/homestar to https://github.com/libp2p/rust-libp2p?tab=readme-ov-file#notable-users?

[bgins]

PS: Are you interested in adding https://github.com/ipvm-wg/homestar to https://github.com/libp2p/rust-libp2p?tab=readme-ov-file#notable-users?

Yes absolutely! Here it is: #4669

[bgins]

Closed in favor of #4681

[mergify]

⚠️ The sha of the head commit of this PR conflicts with #4681. Mergify cannot evaluate rules on this PR. ⚠️