fix: update case of arguments sent to registration.libp2p.direct

[achingbrain]

At some point it became stricter about the casing of arguments so update the JSON body to golang-style sentence case instead of javascript-style camel case.

Also increase timeout for individual requests because sometimes the sever is slow.

Change checklist

• I have performed a self-review of my own code
• I have made corresponding changes to the documentation if necessary (this includes comments as well)
• I have added tests that prove my fix is effective or that my feature works