Openedx-events

---------------------
Changed
~~~~~~~
* **Breaking change**: Moved serialize_event_data_to_bytes from openedx_events.event_bus.avro.tests.test_utilities to openedx_events.event_bus.avro.serializer
* **Breaking change**: Moved deserialize_bytes_to_event_data from openedx_events.event_bus.avro.tests.test_utilities to openedx_events.event_bus.avro.deserializer

---------------------
Changed
~~~~~~~
* **Breaking change**: Moved load_all_events() from openedx_events.tests.utils to openedx_events.tooling

---------------------
Added
~~~~~~~
* Added support for array type.
* Added new XBLOCK_SKILL_VERIFIED event.
* Added XBlockSkillVerificationData classes.

--------------------
Changed
~~~~~~~
* **Breaking change**: ``send_event_with_custom_metadata`` changes to accept a single EventsMetadata object rather than all of the fields that go into one. This only directly affects event bus consumer libraries.

Added
~~~~~
* Added ``COURSE_CERTIFICATE_CONFIG_CHANGED`` and ``COURSE_CERTIFICATE_CONFIG_DELETED`` signals for when a course's certificate configuration is updated or deleted

--------------------
Added
~~~~~
* Added ``send_event_with_custom_metadata``. This will enable event bus consumers to send the event signal with the same metadata fields that were used when the event was produced.

Fixed
~~~~~
* Updated time metadata to include UTC timezone. The original implementation used utcnow(), which could give different results if the time were ever interpreted to be local time. See https://docs.python.org/3/library/datetime.html#datetime.datetime.utcnow
* EventsMetadata minorversion is now fully optional, and doesn't need to be supplied when initializing to get the default of 0.

Changed
~~~~~~~
* Updated send_event with an optional time argument to be used as metadata.

---------------------
Changed
~~~~~~~
* Use collections.abc import to use with python 3.8 and 3.10.