The conflict was in the Message shortcut: changed that to IRC-Message
to avoid the conflict.  Still not sure how that conflict comes about
but at least Whateverable works out of the box again.

- use modern file extensions:
  .pm6 -> rakumod, .p6 -> .raku, .t -> .rakutest
- tighten up use statements: use auth/version wherever possible

Did *not* actually look at contents yet, but it looks like:

- Cro/Cro::HTTP could be replaced by a simple run "curl"
- same for HTTP::UserAgent
- IO::Socket::SSL does not appear to be used directly anywhere
- It looks like all "from-json" calls can have an :immutable
  added for speed/memory usage.

Did this in a branch as I did not test anything yet: these where
just the brute force modernization changes.  Also, I have this
feeling that if I push to main, it will be automatically deployed?

And use the most recent version of Terminal::ANSIColor