Add type hints and type checking (#885)

* 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.

changelogs/fragments/refactoring.yml

@@ -5,3 +5,4 @@ minor_changes:
   - "Python code modernization: remove Python 3 specific code (https://github.com/ansible-collections/community.crypto/pull/877)."
   - "Python code modernization: avoid unnecessary string conversion (https://github.com/ansible-collections/community.crypto/pull/880)."
   - "Python code modernization: avoid using ``six`` (https://github.com/ansible-collections/community.crypto/pull/884)."
+  - "Python code modernization: add type hints and type checking (https://github.com/ansible-collections/community.crypto/pull/885)."

changelogs/fragments/relative-timestamps.yml

@@ -0,0 +1,5 @@
+breaking_changes:
+  - "The validation for relative timestamps is now more strict. A string starting with ``+`` or ``-`` must be valid,
+     otherwise validation will fail. In the past such strings were often silently ignored, and in many cases the code
+     which triggered the validation was not able to handle no result
+     (https://github.com/ansible-collections/community.crypto/pull/885)."