Doc: match statement in style guide (#5187)

* Test: add micro benchmark for match

* Doc: add 'match' to python style guide

docs/style.md

@@ -29,6 +29,10 @@
 * New classes, attributes, and methods in core code should have docstrings that follow
   [reST style](https://peps.python.org/pep-0287/).
 * Worlds that do not follow PEP8 should still have a consistent style across its files to make reading easier.
+* [Match statements](https://docs.python.org/3/tutorial/controlflow.html#tut-match)
+  may be used instead of `if`-`elif` if they result in nicer code, or they actually use pattern matching.
+  Beware of the performance: they are not `goto`s, but `if`-`elif` under the hood, and you may have less control. When
+  in doubt, just don't use it.
 
 ## Markdown