Add maintainer list to the docs

It'd be good to add the maintainer list to the Meson docs.

In https://github.com/mesonbuild/meson-python/pull/354 we'd like to credit the Meson maintainers, but currently there's no public list.

The issue asks for a public maintainer list in the Meson documentation, motivated by meson-python pull request 354. Start by locating the relevant documentation section and confirming the maintainers to credit from the project's current public information. Done means the documentation contains an accurate maintainer list that addresses the requested credit.

Written by the indexing model from the issue text.