Tests

Add first real chat integration-tests 🎉 #204

Job	Run time
unit-test (ubuntu-22.04, 17)	39s
unit-test (macos-latest, 17)	1m 12s
jvm-integration-test (macos-latest, 17)	1m 7s
unit-test (windows-latest, 17)	53s
graalvm-build	4m 39s
jvm-integration-test (ubuntu-22.04, 17)	44s
jvm-integration-test (windows-latest, 17)	45s
graalvm-integration-test	23s
	10m 22s

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