Tests

Add basic first chat integration test #198

Job	Run time
unit-test (macos-latest, 17)	1m 12s
unit-test (windows-latest, 17)	50s
jvm-integration-test (macos-latest, 17)	1m 7s
jvm-integration-test (ubuntu-22.04, 17)	47s
unit-test (ubuntu-22.04, 17)	29s
jvm-integration-test (windows-latest, 17)	5m 40s
graalvm-build	4m 39s
graalvm-integration-test	15s
	14m 59s

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