Support custom SASL mechanisms including AWS MSK #139

Job	Run time
📦 Build the source distribution	19s
Tests on 3.8	5m 36s
Tests on 3.9	6m 45s
Tests for Kafka 0.9.0.1 (Python 3.12)	3m 22s
Tests on 3.10	7m 28s
📦 Publish to PyPI	0s
Tests for Kafka 0.10.2.2 (Python 3.12)	4m 46s
Tests on 3.11	6m 24s
Tests for Kafka 0.11.0.2 (Python 3.12)	5m 20s
Tests on 3.12	5m 59s
Tests for Kafka 0.11.0.3 (Python 3.12)	4m 53s
Tests on pypy3.9	1m 22s
Tests for Kafka 1.1.1 (Python 3.12)	5m 11s
Tests for Kafka 2.4.0 (Python 3.12)	5m 41s
Tests for Kafka 2.5.0 (Python 3.12)	5m 42s
Tests for Kafka 2.6.0 (Python 3.12)	6m 29s
Tests for Kafka 0.8.2.2 (Python 3.12)	10m 15s
Tests for Kafka 0.8.2.2 (Python 3.10)	3m 8s
✅ Ensure the required checks passing	2s
	1h 28m 42s

Provide feedback