* Enable basic type checking.
* Fix first errors.
* Add changelog fragment.
* Add types to module_utils and plugin_utils (without module backends).
* Add typing hints for acme_* modules.
* Add typing to X.509 certificate modules, and add more helpers.
* Add typing to remaining module backends.
* Add typing for action, filter, and lookup plugins.
* Bump ansible-core 2.19 beta requirement for typing.
* Add more typing definitions.
* Add typing to some unit tests.