Reverse a string

Raku handles graphemes, multi-byte characters and emoji correctly by default.

say "hello world".flip;
say "as⃝df̅".flip;
say 'ℵΑΩ 駱駝道 🤔 🇸🇧 🇺🇸 🇬🇧‍ 👨‍👩‍👧‍👦🆗🗺'.flip;

Output:

dlrow olleh
f̅ds⃝a
🗺🆗👨‍👩‍👧‍👦 🇬🇧‍ 🇺🇸 🇸🇧 🤔 道駝駱 ΩΑℵ