Please provide syntax for POD6 (a.k.a. RakuDoc), the markup language for Raku (formerly Perl6)

https://github.com/jgm/pandoc/issues/6488#issue-647199358
https://github.com/jgm/pandoc/issues/6488#issuecomment-1648217051

The Perl6 project was initiated in year 2000, the Rakudo compiler was released in 2015, and the language was renamed Raku in 2019.

Raku features built-in: 1. Unicode support, 2. Object Orientation, 3. "Rational" maths, and 4. a more-powerful-yet-simplified Regex Grammar. We've made it into the latest [StackOverflow Developer's Survey (2023)](https://survey.stackoverflow.co/2023/)!!

Probably the greatest need at the moment is getting POD6 (a.k.a. RakuDoc), the Raku markup language, to work with skylighting/Pandoc. Note, Raku's POD6 is not the same as Perl's POD, see below:

Original specification:
https://design.raku.org/S26.html

Current specification:
https://docs.raku.org/language/pod

Working group:
https://github.com/Raku/problem-solving/issues/375

Thank you!

Start by reading the linked Pandoc issue and comments, then compare the original and current POD6 specifications. Inspect how skylighting derives and registers tokenizer definitions; done means POD6/RakuDoc is supported by skylighting and works with Pandoc.

Written by the indexing model from the issue text.