DOC: merge Security section into about.rst and rename to Packages

Author: dnicolodi

docs/about.rst

@@ -31,3 +31,27 @@ Ralf Gommers contributes to the development of ``meson-python`` as
 part of their job at `Quansight`__.
 
 __ https://www.quansight.com/
+
+
+Packages
+========
+
+``meson-python`` packages are distributed via `PyPI`_ as a source
+distribution and a single pure Python wheel that works across all
+supported Python versions.
+
+Distributors are recommended to fetch release sources from the
+corresponding tags on the Git repository_ or from source distributions
+on `PyPI`_. Git tags are PGP-signed with one of the following keys:
+
+- |3DCE51D60930EBA47858BA4146F633CBB0EB4BF2|_ Filipe Laíns
+- |52BDC33FD1FBAB569D47FFA923D9E5499A08BDC5|_ Ralf Gommers
+
+.. _repository: https://github.com/mesonbuild/meson-python
+.. _PyPI: https://pypi.org/project/meson-python/
+
+.. |3DCE51D60930EBA47858BA4146F633CBB0EB4BF2| replace:: ``3DCE51D60930EBA47858BA4146F633CBB0EB4BF2``
+.. _3DCE51D60930EBA47858BA4146F633CBB0EB4BF2: https://keyserver.ubuntu.com/pks/lookup?op=get&search=0x3dce51d60930eba47858ba4146f633cbb0eb4bf2
+
+.. |52BDC33FD1FBAB569D47FFA923D9E5499A08BDC5| replace:: ``52BDC33FD1FBAB569D47FFA923D9E5499A08BDC5``
+.. _52BDC33FD1FBAB569D47FFA923D9E5499A08BDC5: https://github.com/rgommers.gpg

docs/index.rst

@@ -111,7 +111,6 @@ for quick questions - one ``meson-python`` maintainer is active there.
 
    changelog
    about
-   security
    contributing/index
    Source Code <https://github.com/mesonbuild/meson-python>
    Issue Tracker <https://github.com/mesonbuild/meson-python/issues>