Add --format=json for scripting
Respect NO_COLOR and add --color
Read defaults from ~/.config/hello-hut/config.toml
Uses tomllib where available; on Python < 3.11 the file is ignored.
Add --time-of-day greetings
Add --shout to print the greeting in capitals
Use str.upper() so that accented names keep their accents.
cli: accept the name as a positional argument
`hello-hut Ada` reads better than `hello-hut --name Ada`.
Add greeting module and command-line entry point
hello-hut greets whoever is passed with --name, or "friend" by
default.